The handleResponse method of WMSGetFeatureInfo now considers if the content-type
of the response is 'application/json'. In the case that JSON is returned, the
features array is constructed by parsing doc with OpenLayers.Format.GeoJSON.
This prevents a null reference issue when asking for feature information from
GeoServer on Internet Explorer 11.
Got rid of the swp file pattern.
Fixed the white space issue.
Merge pull request #1384 from mdalbertsonjr/wmsgetfeatureinfo-json-squashed

Fixed null reference in WMSGetFeatureInfo on Internet Explorer 11