Various bug fixes. Some new functionality.

Improved lon/lat extraction from results to include extracted metadata
constraints
added valid heat map facet check to heat map generation
Corrected hack around heat map max result setting
Added open layers requesting recalculation of heat map on zoom/pan
Started to add suggestion support to search bar
Added no results content fixes to default processors
Updated json and xml extract to fix namespace and blank content issues
Added suggestions support to query options (all range constraints
enabled by default)
Fixed geo path constraint invalid JSON issue
Fixed start result not supported issue for structured query in search
context
Added pagination support to structured query results in search context
Added suggestions support to search context