adding journal support to taskboard. When an issue is drag & dropped the status change is mentioned in the issue journal.
Fix for SQLite
Refactor Filter javascript
Reapply filters on page load
Merge remote-tracking branch 'gp/master'
Add category to issue cards
Add support for redmine_tags plugin
Merge remote-tracking branch 'th/master' into HEAD

Conflicts:
	app/models/task_board_column.rb
	assets/stylesheets/taskboard.css