File browser beta

* Extjs fb based on https://github.com/revolunet/Ext.ux.filebrowser
Merge branch 'mariss_14_va-sp-serviceID_2' of https://github.com/alediator/mapstore into filebrowser
Fixed #370: implemented new config option scaleOverlayMode, to replace advancedScaleOverlay and support no scalebar at all
fixes to filebrowser and upload panel
Merge branch 'master' of github.com:geosolutions-it/MapStore
Merge branch 'master' into HE_Customiz
fixed default authentication propagation from tools
Plupload panel fixes

* Update plupload library to 1.5.3
* Include missed resources (for flash and silverlight runtimes)
* Minor fixes on extjs component to make it compatible with IE < 10
improvements to Updater tool, minor fixes
Merge branch 'master' into HE_Customiz