Use config cascade for style.ini files

This simplifies style loading and allows the plugins like farmer to
extend the the loading of style files. Also adds some first unit tests.

Originally discuss

Use config cascade for style.ini files

This simplifies style loading and allows the plugins like farmer to
extend the the loading of style files. Also adds some first unit tests.

Originally discussed in FS#2703 and #134

Squashed commit of the following:

commit 5ed550f6ba61a1d475b7572cbff18f0d790c78c2
Merge: 0cefed65e cab1833b0
Author: Andreas Gohr <gohr@cosmocode.de>
Date: Thu Feb 28 13:38:46 2019 +0100

Merge branch 'styleConfCascade' of https://github.com/annda/dokuwiki into annda-styleConfCascade

* 'styleConfCascade' of https://github.com/annda/dokuwiki:
Clean up StyleUtils
Update StyleUtils test
Fix array to boolean conversion
Use better placeholder string in config cascade
Calls to StyleUtils use the new constructor
Add test for StyleUtils
Refactor StyleUtils
WIP add temporary test comparing two implementations of StyleUtils
WIP add new style config cascade side by side with the old one

commit cab1833b09a59331a5580fe0e3e6f36d743dea09
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 17:54:27 2019 +0100

Clean up StyleUtils

commit 766e3907cf7b234c3f2fa7bf86f205c1c8c7c6e1
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 17:51:15 2019 +0100

Update StyleUtils test

commit f5c08787ddf9db60e3429421e5c627d5c81d876a
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 12:51:53 2019 +0100

Fix array to boolean conversion

commit c9671698992328d5671a43b2707ffc6c5b117423
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 12:38:55 2019 +0100

Use better placeholder string in config cascade

commit 4845eff54d227325476bb00b7c8402ce58cf72df
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 12:24:16 2019 +0100

Calls to StyleUtils use the new constructor

commit 7a6337a8f8f2cc0cedbf54ae0b43e94033192cb8
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 12:22:44 2019 +0100

Add test for StyleUtils

commit 5ae9e8f69e076ab2a18b24aa178cca15fea6b000
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Thu Feb 21 12:16:57 2019 +0100

Refactor StyleUtils

commit a2adcc9f37be93f4bcf90fdba4089ea4b0d6436e
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Sat Feb 16 23:58:04 2019 +0100

WIP add temporary test comparing two implementations of StyleUtils

commit 845c40c4faf379a65134e171514a09d47ffe95f1
Author: Anna Dabrowska <dabrowska@cosmocode.de>
Date: Sat Feb 16 23:59:41 2019 +0100

WIP add new style config cascade side by side with the old one

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Merge pull request #2689 from splitbrain/refactorCachePSR2

Refactor cache.php to better conform with PSR 2

Use setter instead of deprecate public property

PSR2 style fixes

These are some simple whitespace/arrangement things that apparantly
can't be fixed automatically

Merge branch 'master' into psr2

Refactor cache.php into different files

removed unnecessary count

Fix a php7 bug

php7 syntax fix.
https://forum.dokuwiki.org/thread/15725
https://forum.dokuwiki.org/post/58606

line lengths shortened

This makes sure all files use line lenghts shorter than 120 characters.

This is a quick fix. It might not always be the nicest change.

refactor: extract css utils to an autoloaded class

The goal is to make the css replacement accessible in other contexts,
for example for the manifest.

Update css.php

typo

make sure guaranteed placeholders are defined. fixes #1792

This adds some simple defaults for the guaranteed placeholders. This
ensures plugins can safely use these placeholders even when a template

make sure guaranteed placeholders are defined. fixes #1792

This adds some simple defaults for the guaranteed placeholders. This
ensures plugins can safely use these placeholders even when a template
did not implement them.

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Merge pull request #1862 from gamma/css-modifications-2

Css modification actions - alternative

Make default encapsulation more readable and less duplicate.

Add the preview-bool for the cache file.

Fix PHP Notices: Reduce error log noise

While DokuWiki suppresses PHP Notices they are still a code smell and
should be fixed. This fixes some PHP Notices that occurred.

Some of these fixes could b

Fix PHP Notices: Reduce error log noise

While DokuWiki suppresses PHP Notices they are still a code smell and
should be fixed. This fixes some PHP Notices that occurred.

Some of these fixes could be refactored into nicer code once we move to
PHP 7 and get access to the `??` operator.

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Check for cache usage first

This is important because the $cache->cache would have been set already and have no impact on the delivered result. Meaning: two different requests could have resulted in

Check for cache usage first

This is important because the $cache->cache would have been set already and have no impact on the delivered result. Meaning: two different requests could have resulted in the same result.

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Syntax error and another bit of flavour.

Remove the flavour feature. It was some kind of a hassle. If you really want to filter out styles, you have to write a plugin either way and implement the tpl metaheaders event as well and handle eve

Remove the flavour feature. It was some kind of a hassle. If you really want to filter out styles, you have to write a plugin either way and implement the tpl metaheaders event as well and handle everything your self.

The CSS modification is more like the JS_SCRIPT_LIST now. It adds some overhead, but not too much. It still gives great flexibility over the CSS.

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Remove `handheld`, add `speech` as default media types.

Typo fix.

Revert the http_cached line to the one already in the code to keep changes at a minimum.

Code Cleanup. Replaced \t with 4xSpace.

Changed the cache initialisation: it does not use the list of files with an md5 (due to redundancy and time consumption) but the flavour and the type (previously removed).

Use the flavour system to create individual css files. Only the default flavour (style / style.ini) will have the default styles for interwiki and filetypes. There are two new events:

1. CSS_STYLES

Use the flavour system to create individual css files. Only the default flavour (style / style.ini) will have the default styles for interwiki and filetypes. There are two new events:

1. CSS_STYLES_INCLUDED to modify the list of stylesheet files for a certain mediatype or prevent the mediatype or styles within it. This event is fired for the interwiki and filetypes too, to prevent that they are included
* The Data that is being sent to the event contains: list of files or the keyword DW_DEFAULT for the interwiki / filetypes; the mediatype, the flavour, if the data should be encapsulated by a default @media and the encapsualation prefix (e.g. @media screen)
2. CSS_CACHE_USE to prevent the use of a cached version of the CSS, just like the JS event that already exists.

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