[#602] Remove code that sets wrong path
[#607] Control Mononitoring UI based on config property

* Based on the property `showMonitoringFeature` (default to *false* if not
  present) we show or hide, monitoring related UI
[#613] Throw exception incase lat/lon values are invalid

* Use the internal validation check of GeocellManager to throw exception incase lat/lon values are invalid
[#613] Refactoring the populateGeocells function
[#607] Show META question options on Monitoring Groups

* The options 'Use in record display' and 'Use as record location' will
  show on 'Monitoring' groups and when Monitoring features is enabled.
Merge pull request #608 from akvo/issue/607

[#607] Control Mononitoring UI based on config property
Merge pull request #614 from akvo/issue/613

[#613] Validate lat/long data while creating geocells
Merge pull request #603 from akvo/feature/602

[#602] Remove code that sets wrong path
Merge branch 'develop' into release/1.7.0