Update _action_dialog_edit_basics.tpl

Typo. See also:
modules/mod_admin/translations/de.po:1008: msgid "Visit full editpage"
modules/mod_admin/translations/es.po:1018: msgid "Visit full editpage"
modules/mod_admin/translations/et.po:1101: "Visit full editpage"
modules/mod_admin/translations/nl.po:995: msgid "Visit full editpage"
modules/mod_admin/translations/pl.po:995: msgid "Visit full editpage"
modules/mod_admin/translations/ru.po:1018: msgid "Visit full editpage"
modules/mod_admin/translations/tr.po:940: msgid "Visit full editpage"
modules/mod_admin/translations/zh.po:1016: msgid "Visit full editpage"
mod_admin: Also fix typo in .po files
Add Arthur to contributors file
doc: Move the section on git commit messages to the "contributing source code" section.
mod_admin: Easier admin css customization

Allow admin pages to include custom CSS using optional template
_html_head_admin.tpl.
mod_admin: Easier admin edit page customization

Move blocks in the admin edit page to 2 separate template files, so
that the templates can be overridden by category type. Documentation
included.

Squashed commit of the following:

commit 4a68aaa89ba4c0a02e2feef866cdfd9a4c099af2
Author: Arjan Scherpenisse <arjan@scherpenisse.net>
Date:   Sun Jul 7 11:21:07 2013 +0200

    Tweaks for admin edit page customsations

commit c033a967e1d00c231965e60d230bb1f8460b198a
Author: Arthur Clemens <arthur@visiblearea.com>
Date:   Sat Jul 6 17:11:05 2013 +0200

    Enhance documentation

    Add a note about meta to show elements on category pages but not on
    instances of that category.

commit 4af0ab38f42576287a052ffb767a8d83197e72bd
Author: Arthur Clemens <arthur@visiblearea.com>
Date:   Sat Jul 6 16:42:53 2013 +0200

    Add reference to r

    Needs reference to m.rsc[id]

commit 2bffa9d2b683edf111f684a5a26ac32184334a49
Author: Arthur Clemens <arthur@visiblearea.com>
Date:   Sat Jul 6 14:41:22 2013 +0200

    Easier admin customization

    Move blocks in the admin edit page to 2 separate template files, so
    that the templates can be overridden by category type. Documentation
    included.
mod_development: Fix crashing file watcher process while editing templates

Also only flush the cache of a particular site when a new template
within a site has been found.
mod_admin_predicate: Fix category tree for fluid layout change

Fixes #586