Update wmtssource.js

- "duplicated" style parameter is not supported by Intergraph GeoMedia
- Uppercase Parameter is needed by ARCGis 
- are there other constraints?
Move font-family customization to layout.css
Add WMS GetFeatureInfo reader format
Add tests suite for GetFeatureInfo format
Make GetFeatureInfo format pass ol2 test suite
Change format name to WMSGetFeatureInfo
Fix compile warning
Merge pull request #2933 from elemoine/fix-warning

Fix compile warning
Fix jsdoc comment
Merge pull request #2935 from geosense/master

Fix jsdoc comment
Do not rely on unstable index
Clip rendering to layer extent
Example demonstrating limited layer extent
Push the feature, not the index
A bit more static image doc
Similar detail for all crossOrigin options
Make stability checkbox sticky
Merge pull request #2936 from ahocevar/unselect-index

Fix unselection of selected features
Mark applyTransform api stable
Merge pull request #2943 from fredj/applyTransform-api

Mark applyTransform api stable