Handle properly missing POI on DELETE/UPDATE
Fixed code repetition
Refactored error handlinkg in API
js-beautify
Fixed name
Added affectedRows check
Merge pull request #43 from Wikia/MOB-1481

MOB-1481: affected rows checks
Moved error generators to errorHandler
Added new line
Fixed spec
Added unit tests for error generating functions
Fixed comments
Merge branch 'master' into MOB-1480

Conflicts:
	api/v1/map.crud.js
	api/v1/tile_set.crud.js
	lib/errorHandler.js
	specs/errorHandler-spec.js
Merge pull request #41 from Wikia/MOB-1480

MOB-1480: Handle properly missing POI on DELETE/UPDATE