Settled candidateUI to clean version.

1.	Remove county_image in county_list.
2.	Use hero-unit(header & council_link & county_image) to replace page-header.
3.	Extra: Setup navbar Title visible-phone
Merge remote-tracking branch 'upstream/master' into candidateUI#31

Conflicts:
	voter_guide/static/css/g0v.css
	voter_guide/templates/base.html
County list rebase.

1.	Import two image, one from ETBlue, the other from mireille09.(Two
images can save to google drive).
2.	Reset county list to no-icon version, it may be clear.
Merge branch 'master' into candidateUI#31

Conflicts:
	voter_guide/templates/candidates/district.html
Merge pull request #128 from s890081tonyhsu/candidateUI#31

Candidate ui#31, UI Second version.