WL-2095 Don't show courses more than a year old
WL-2095 Use Joda Time
WL-2095 set startyeardate whenever it is used
WL-2688 Fix type in jquery.cookie.js
Merge pull request #75 from ox-it/WL-2688

WL-2688 Fix type in jquery.cookie.js
WL-2784 Fix and Testcase for Component Sessions
WL-2784 change to all-delete-orphan
WL-2095 remove commented code
Merge pull request #65 from ox-it/WL-2095

WL-2095 Don't show courses more than a year old
Merge pull request #77 from ox-it/WL-2784

WL-2784 Cleanup old session from database.

When old sessions where removed and new ones added the database kept the old sessions about, this change fixes it so the importer removes the old sessions first.
WL-2775 merge origin/master