Begin addiing tooltip
Add contribution info to overview tooltip
Fix merge conflicts
Remove hard-coded references to parent div name.
Hide tooltip on mouseleave
Merge with upstream
Add tooltips to candidate chart view.
Fetch contributions by candidate.
Refactor code for candidate tooltips.
Merge branch 'master' of https://github.com/openoakland/opendisclosure
Merge branch 'master' of https://github.com/openoakland/opendisclosure
Merge branch 'master' of https://github.com/vbrown608/opendisclosure
Add contributions.self_contribution boolean column
Add /api/contributions/zip

This returns data in the correct format for @vbrown608's graph so that
we don't have to ship 2 MB of JSON down.

Closes #207
Merge remote-tracking branch 'vivian/master'

* vivian/master:
  Refactor code for candidate tooltips.
  Add tooltips to candidate chart view.
  Hide tooltip on mouseleave
  Remove hard-coded references to parent div name.
  Add contribution info to overview tooltip
  Begin addiing tooltip
Merge remote-tracking branch 'mike/PerCandidate'

* mike/PerCandidate:
  Fetch contributions by candidate.

Conflicts:
	app.rb
Comment out Vivian's pride and joy

Temporarily :(