Added the CREATE_ISSUE event to the activity feed

This adds the CREATE_ISSUE type. Any issue plugins that inherit from the
bases\issue\IssuePlugin right now will automatically use this new
feature.
Moved activity creation down.
Revert "Moved activity creation down."

This reverts commit b8d07ac00cb877214c45b2969857bc35788c808a.
Moved activity creation down.

Without swap file this time!
Merge pull request #823 from Wessie/master

Added create_issue event to the activity feed.