Drop jquery.cookie

It was only used to generate a CSRF token for Django, which is much better done
in Django itself anyway.
browser: use the 'leden' template as base to keep the submenu

It would otherwise disappear.
Typo in agenda: entitities instead of entities
openweekPoster2014
home -> openweekPoster2014
Merge pull request #216 from aykevl93/browser-submenu

'leden' submenu voor de browser
Merge pull request #218 from aykevl93/fetch-agenda-typo

Typo in agenda: entitities instead of entities
Merge pull request #215 from aykevl93/drop-jquery-cookie

Drop jquery.cookie