Allow disabling creation of subnamespaces

New 'createns' config option, enabled by default. If disabled, any `:`
in the page name will be replaced by `_` when determining the page name.

Fixes #120

Add placeholder text to page name input

Fixes #88

more flexibility

* @INPUT@ placeholder can be used to reference the given input (useful
to create a new namespace) makes #70 obsolete
* new ? syntax to overwrite config options from the syntax (de

more flexibility

* @INPUT@ placeholder can be used to reference the given input (useful
to create a new namespace) makes #70 obsolete
* new ? syntax to overwrite config options from the syntax (defaults
still come from the config setting)
* support for strftime placeholders in the namespace config. Allows to
create a daily page for example
* New option autopage which hides the input field. Together with the new
date placeholder this allows to create a daily page on a single button
click

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Coding standards fixes throughout codebase.

Code layout and minor fixes for most settings.php files. Removed Italiam and Russian which were just copies of the English one.

initial commit from the original source
original source was http://dokuplugins.idotech.info/addnewpage.zip