Fixes #427: added autocomplete optional support to SpatialSelectorQueryForm values
Uses the Geoserver gs:PagedUnique process
Merge pull request #428 from mbarto/autocomplete_querypanel

Fixes #427: added autocomplete optional support to SpatialSelectorQueryForm values
fixed default headers in UserGroupComboBox.js
improved management of user attributes for date fields
Wrong swapAxis check for WMS 1.3.0. Close #429.
Merge branch 'master' of github.com:geosolutions-it/MapStore
Add page size configuration and increased default to 20. close #430