Updated Tags Stuff: 
- Fixed css problem that hid the components when there were no tags displayed
- Fixed css problem where the components list would be taller than the browser window and not scrollable
- Added 'show top tags' link as a way to get back to a smaller tags view after viewing all tags
- Fixed a but that made it so not the most popular tags were not shown when they were supposed to be.
Fixed grunt errors.
Merge branch 'master' of https://github.com/mozilla/appmaker into tags
Merge pull request #509 from flukeout/tags

Tags take 2