Allow alternate editor

[nikrou]

The default editor is great but difficult to extend. I propose to allow alternate editor (ckeditor, markitup,...) to replace it through plugins.

I also create a wiki page (in french, sorry) :  http://fr.dotclear.org/documentation/brainstorming/nouvel-editeur

[Nicolas <nikrou77@…>]

(In [db6f6a1f4f25]) Move legacy editor to a plugin. First step for alternate editors. Addresses #1896

[Nicolas <nikrou77@…>]

(In [09b5b27127a8]) Update Makefile Activate dcLegacyEditor by default Addresses #1896

[Nicolas <nikrou77@…>]

(In [bae19d3adbc4]) Addresses #1896 : add choice of editor in preferences Keeps old functions in core addFormater(), callFormater() for compatibility.

[Nicolas <nikrou77@…>]

(In [cac55fdd7178]) Addresses #1896. Multiple editors. Fix issue when no editor is activated or when choosen editor has been deactivated.

[Nicolas <nikrou77@…>]

(In [1873a0e11790]) Add link to preferences when no editor has been choosen. Add an empty option in editor select to see directly no editor has been choosen. Addresses #1896

[Nicolas <nikrou77@…>]

(In [278a45b0038c]) Addresses #1896 Add editor for blog preference pages and for widget. Widget text can now have ckeditor too !

[Nicolas <nikrou77@…>]

(In [bac24f5c42ae]) Addresses #1896. Save editor in post meta Manage editor from preferences If editor saved in meta post is not the ones chosen in preferences a simple textarea is displayed.

[Nicolas <nikrou77@…>]

(In [c7f1c1418fbf]) Addresses #1896. dcLegacyEditor must be enabled for new installation and it should be default editor.

[Nicolas <nikrou77@…>]

(In [116bb4bd1b88]) Do not store editor in meta. Addresses #1896

[Nicolas <nikrou77@…>]

(In [09dd799a19bd]) Addresses #1896 Preferences: one editor for each available formats.

[Nicolas <nikrou77@…>]

(In [23dda5f89c36]) Missing test for editor from behavior callback Apply changes to page plugin Addresses #1896