Rename routes & heading titles
Add site search

Fixes #22
Search case insensitive
Change from delete to enable/disable routes
Bugfix on changeActiveStatus (sites not defined)
Reformat sites list
Fixes #23
Remove requirement for site URL in new site
Default URL to null if not present
Fixes #24
Add bootstrap-datepicker
Rough out adding dates from /sites
use divs instead of a list
Adding dates implemented
Refactor lib/sites.js
Implement deleting dates
Add frontend delete button
Delete publication_date, not site
Fixes #25
Slim down headings as they overflowed