media: Fix media_resize_image cache check

The check was backwards, and it also caused a failure when there is no
cache file (mtime=0) because the function would still return the path to
the nonexist

media: Fix media_resize_image cache check

The check was backwards, and it also caused a failure when there is no
cache file (mtime=0) because the function would still return the path to
the nonexistent cache file.

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use Slika for image resizing and cropping

This replaces our own resize/crop function by the Slika library.

This is not yet ideal, as there is quite a bit duplicated code between
media_resize and me

use Slika for image resizing and cropping

This replaces our own resize/crop function by the Slika library.

This is not yet ideal, as there is quite a bit duplicated code between
media_resize and media_crop now. Ideally these two should be replaced by
a single method handling both. I'm just not sure where to best put it
yet.

Using Slika introduces two new features:

* auto rotation based on EXIF #3059
* support for webp #3238

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Merge branch 'master' into form

change event naming scheme

FORM_*_OUTPUT scheme had been introduced since Apriil 2018, see #2286

Merge pull request #3115 from moisesbr-dw/sort-with-collator

Sort with collator

fix Scrutinizer annotations

tigger HTMLFORM_*_OUTPUT events

trigger events in Form::toHTML() instead of using Event::createAndTrigger()

wrap sorting functions into their own class

Merge branch 'master' into form

rewrite forms in MediaManager using dokuwiki\Form\Form class

hide extensions only when javascript is available

Progressive enhancement asks for having information available fon nonJS
users and transforming the interface by JS if available

More compact list of allowed file types in media uploader

Replace id with class in media uploader

Display the list of allowed mime types in media uploader

fix Ui\Diff::diffHead() scope public

html_diff_head() was used in inc/media.php

Merge branch 'master' into Refactor_Fulltext

Move defines to their own file

As described in
https://github.com/dwp-forge/columns/issues/5#issuecomment-638467603
sometime the Lexer constants have not been (auto)loaded when a syntax plugin
is in

Move defines to their own file

As described in
https://github.com/dwp-forge/columns/issues/5#issuecomment-638467603
sometime the Lexer constants have not been (auto)loaded when a syntax plugin
is invoked (I'm not sure why).

In general PSR2 discourages a mix of main code and function/class setup
with the call to define() being considered main code.

This patch moves these the define calls to a separate new file, solving
both of the above problems.

These are not all our defines. Instead I focused on the ones that are
ENUM-like.

In the future we should think about what defines can be replaced by
class constants and what other define() calls should be moved.

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Insertion of current namespace in Media Manager tree list

As the $data sort order has been fixed in search() (see "search.php"), utf8_encodeFN() must not be used in the comparison.

Merge remote-tracking branch 'upstream/master' into Refactor_Fulltext

Fixed inconsistent handling of falsy values on fperm setting

The $conf['fperm'] value was checked in multiple files using different methods.
This can cause permission trouble with restricted environ

Fixed inconsistent handling of falsy values on fperm setting

The $conf['fperm'] value was checked in multiple files using different methods.
This can cause permission trouble with restricted environments, i.e. when chmod is forbidden and file permissions are non-default.
Now, all checks use implicit cast to boolean which leads to consistent behaviour.

Also, a misleading variable was renamed in context to better understand one of the checks.

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move backlinks() and mediause() into MediaIndex class

rewrite deprecated ft_* functions

Include rev_id in new revision link in notification email

Older versions have a "This is an old revision of the document!" message on the top of the page. By including rev_id, user can always see th

Include rev_id in new revision link in notification email

Older versions have a "This is an old revision of the document!" message on the top of the page. By including rev_id, user can always see the version the email is referring to, while knowing if it is the latest version by looking at the wiki page.

A hint about this is also added to email text.

This fixes #2196.

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replaced deprecated utf8 functions

For now this uses full qualified namespaces, sensible imports may come
later.

Merge branch 'psr2-pluginredux' into psr2

* psr2-pluginredux:
Minor optimizations in PluginController
Snake to Camel case fixes inn PluginController
Fix snake->camel case, doc blocks
minor c

Merge branch 'psr2-pluginredux' into psr2

* psr2-pluginredux:
Minor optimizations in PluginController
Snake to Camel case fixes inn PluginController
Fix snake->camel case, doc blocks
minor code simplification
snake to camel case fixes in EventHandler
Move list of plugin types to plugin controller constant
Avoid accessing the evet system before it's intialized
Avoid processing events before the Event System is intiialized
isEnabled instead of isDisabled
removed get_directory() method from PluginController
fix type hints
moved plugin controller to Extension namespace
removed deleted file from autoloader
deprecated trigger_event() in favor of a static method on Event
First go at moving the plugin classes into their own namespace

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