Alfresco Enterprise 4.2.0 and Alfresco Community 4.2 d/e/f compatibility

* Add a hack to display 'custom view' at the right place (between toolbar and document-list regions)
* Disable 'space-templates' because it's now an Alfresco native feature
* region-id has changed from 'toolbar' to 'documentlist_v2'
* Extend 'documentlist-v2.get' webscript for sites
* Extend 'repo.get' webscript for repository
* Change icons for a better UI integration

Change-Id: I210eba4209f1d6bbcdf74f72919941240bb7607d