Also included RQF. And /spatial/sociodemographic is usins RQF to build queries

Signed-off-by: João Victor Tozatti Risso <jvtr12@inf.ufpr.br>

This reverts commit bfe64623, reversing
changes made to 9c8cfa58.

Changes:
* Cache is defined in `api.js`, not in `app.js` anymore
* Enrollment cache lasts for 1 day, states, regions, citys and schools lastas for 15 days

Closes simcaq/SCRUM#58

Changing apps to follow suggested practices from documentation
and centralizing prefix /api/v1 in the app module.

Now back on /api/v1

Signed-off-by: João Victor Tozatti Risso <jvtr12@inf.ufpr.br>

Signed-off-by: João Victor Tozatti Risso <jvtr12@inf.ufpr.br>

Changes in this commit:
- Singularize all routes and components
- Separate different modules into their own source files
- Rename the API module to enrollment and add a more general API module
- Resources that are related to a route, are now under its scope. For
  example, the year range of the enrollment component is now under the
  route /v1/enrollment/year_range
- Implement a thenable function to execute the queries against the
  database to reduce the amount of duplicated code in the application. This
  approach also allows several concurrent queries to run concurrently in the
  same route.