Merge pull request #125 from mikelimantara/master

Working on buttonDone in taskDetailLayout
Merge pull request #126 from mikelimantara/master

Fix bug in categoryList in TaskManager
minor change
added Categories
added new command and made the Categories appeared
Merge pull request #127 from liafailboy/working

Working
animation for the category added
Merge pull request #128 from liafailboy/working

animation for the category added
Merging step 1
Merge remote-tracking branch 'upstream/master'
Category SideBar slide back