import and display provider data

The healthcare provider data is imported and deployed on staging. Raw numbers have been converted to __rates per 1,000 residents by community area__. Datasets include:

From Health Resources and Services Administration #172:
* [Primary Care Physicians](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_primary_care_physicians#/?year=2010)
* [Specialist Physicians](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_specialist_physicians#/?year=2010)
* [OB-GYN Physicians](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_ob_gyn_physicians#/?year=2010)
* [Primary Care Residents and Fellows](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_primary_care_residents_and_fellows#/?year=2010)
* [Specialist Residents and Fellows](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_specialist_residents_and_fellows#/?year=2010)
* [OB-GYN Residents and Fellows](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_ob_gyn_residents_and_fellows#/?year=2010)

![screen shot 2014-04-28 at 4 53 35 pm](https://cloud.githubusercontent.com/assets/919583/2823475/897c57ba-cf1f-11e3-80c9-639ea18c9573.png)

Note: I only imported this data for community areas (no zip codes), as we have no easy way of distinguishing between datasets that have multiple geographic lookups. 

From Chicago Community Oral Health Forum #171:

* [Dentists](http://chicago-atlas-staging.herokuapp.com/map/healthcare_providers_dentists#/?year=2010)

![screen shot 2014-04-28 at 4 54 57 pm](https://cloud.githubusercontent.com/assets/919583/2823491/c5ce3a3a-cf1f-11e3-8ec6-f57cb5e47b2c.png)

## Detail pages
Each community area has a new chart showing the number of physicians by profession per 1,000 residents and compared to the Chicago average

Example: [Forest Glenn](http://chicago-atlas-staging.herokuapp.com/place/forest_glen#healthcare_providers_dentists)

![screen shot 2014-04-28 at 4 57 41 pm](https://cloud.githubusercontent.com/assets/919583/2823508/1d0e1bee-cf20-11e3-99c1-cf6c7f12c7f5.png)

Related to #166

## Other fixes

* showing percentage suffix on map legend, closes #170
* capitalization consistency for 'Chronic Disease' and 'Infectious Disease' categories
* reduced height of map sidenav elements to fit better on the page