WMS Feature info plugin changes.

* Dependencies gxp/FeatureEditorGrid.js, gxp/FormFieldHelp.js and gxp/SchemaAnnotations.js has been added.
* Feature popup can be displayed as feature 'grid' or as common 'html' changing format parameter.
* Fixes incorrect popup error with multiple layers
* Popup anchor fixes #91 issue
OpenLayer upgrade to v2.13.1
Merge pull request #202 from tdipisa/olup

OpenLayer upgrade to v2.13.1
Updated BBoxQueryForm plugins

Closes #203
Update ExtJs to 3.4.1.1
Merge pull request #204 from tdipisa/extjsup

Update ExtJs to 3.4.1.1
Fixes for IE compatibility and metadata explorer
Close issue #159
Close #147
Changed button icon in AddLayers plugin
Fixing Renderer.defaultSymbolizer override and MarkerEditor layou
Added MousePosition tool as default
Update ExtJS to v3.4.1.1 in mapmanager
Update project version to 1.4-SNAPSHOT
Update project version to 1.4-SNAPSHOT
Updating MapStore site pages
Small fixes to the MapStore site pages
Small updates for MapStore site pages
Improvements for BBOXQueryForm
Added zoom to feature action column in feature grid