Added ability to get multiple points from /nearest by using num_results argument
Uses current JSON format if number of results requested is 1
Set restrictions on number of results possible, so 0 < number <= 100.
Uses range based check for number of results
Removed unnecessary whitespace
Merge branch 'stefan-rajkovic-multiple-nearest-points' of https://github.com/srajkovic/osrm-backend into srajkovic-stefan-rajkovic-multiple-nearest-points

Conflicts:
	DataStructures/RouteParameters.cpp
	Server/APIGrammar.h
Merge branch 'srajkovic-stefan-rajkovic-multiple-nearest-points' into develop