Rebuild regional filtering to be dependant on data

[mackh]

Currently the regional filter on the app is dependant on hardcoded values in the codebase as well as polygon values from the polygon.json file.

The filters look for point locations in the polygons, which is unnessecary.

https://github.com/PeaceGeeksSociety/services-advisor/blob/master/src/angular/Services/search.js#L107-L125

https://github.com/PeaceGeeksSociety/services-advisor/blob/master/src/polygons.json?short_path=14b816f

Refactor the filter to work based on data from the services.json in the Region item, and make it bahavelike the category filter - http://admin.jordan.servicesadvisor.org/service-locations

The region field in the json feed has an error in it, Smith is working to correct this

Remove the code that is calulating the Distrcit membership found here -

Remove District names from the translation files here https://github.com/PeaceGeeksSociety/services-advisor/blob/master/src/angular/translations/translations.config.js#L40-L51 and https://github.com/PeaceGeeksSociety/services-advisor/blob/master/src/angular/translations/translations.config.js#L96-L108