Make date filter reusable [MJ-695][MJ-687]

This was just preparation for adding the date filters in the contact record overview on PRM. Unfortunately it required a few more changes than I was expecting. This branch covers only a dashboard CSS update and a few small url fixes from dashboard that were missed when we switched to solr.

Date filter in the browser:
![full_screen](https://f.cloud.github.com/assets/2728248/2287785/62d4f7d2-9ff1-11e3-930f-ab4131da000a.png)
Date filter in tablet:
![tablet](https://f.cloud.github.com/assets/2728248/2287786/64ba6e10-9ff1-11e3-9d6b-7c297b1f5cfe.png)
Date filter in mobile:

![mobile](https://f.cloud.github.com/assets/2728248/2287789/6662eefe-9ff1-11e3-830c-95b09221c7a0.png)

All tests pass.