Datepicker was used in main.js without the jquery ui being loaded (killing js everywhere except on event edit page), this should fix it by checking the jquery ui is loaded before calling the pugin.
Cleaned the schema file from useless spaces and triple newlines
Check that the datepicker module is loaded

Signed-off-by: Emilien Kenler <hello@emilienkenler.com>
Guest Asso : Modified the model and the event form to allow definition of the guest associations of an event by the event owner
Guest assos : added a javascript layer on the event edit form, to make the selection of guest assos easier, via the select2 jquery plugin
GuestAsso : Made the event's gest associations visible on event description. Improved the display of the guest assos selection list. Added a helper in the asso class to cickly generate a nice link to it.
Event Guest Assos : Added a helper file for events host description / asso description, made the event where the assos is only guest appear with the other event it is host, added the files generated by buid class (quite empty ones).
Whoops forgot some misplaced code
Conflic fixed
oops my englishisterrible
Added the migration files
minified js and css of select2
renamed migration files
Hacked the timestamp of the migration to let this one be launched before bart's ones
Added the js&css needed for the date picker in the event form getJavascripts because the getJavascripts of the widget was ignored
Guest Asso : Corrections after review
Merge pull request #136 from renanlecaro/renan/guestasso2

Renan/guestasso2