add template with login and authkey injection
add groups in user account
Pluggable admin UI and load changes

Squashed commit from `sn_manager` branch:

* Include new categories, users and groups on geostore init files.
* Now the manager UI is a pluggable extjs application like MapStore.
* MapStore changes
 * New load method (now it can load custom tools by user or group)
 * Default header and footer has been removed
 * Load custom tools if available
 * Create a map without template
* GN integration fixes
 * Use default template for the header
 * Add manager app.
fixes and improvements to account management
Merge branch 'geostore_account' into alediator-pluggable_manager
implementation of user attribute management
add user attribute and group management in user manager
add group management to the user manager
restore template manager for admin as default
IE 7 fixes
fixes in composer and login templates
add ux images to the build
Disable OpenLayers "resize" zooming by default
Default tile buffer to zero
added manager css to build
Merge branch 'master' of github.com:geosolutions-it/MapStore
fixes in translation. alinged to geostore client
add change password functionalities to account plugins
improved My account tool
Proposal #8: imported resources. Close #369.