BZ-1047900: re-architecture of metadata indexing - basically created a index per repository. with an index by repo it's possible to remove indexed as soon a repository is deleted or just batch-index one repository content
disabling uberfire-build-config module as it's failing on jenkins
Changed project explorer icons to 24x24 size
BZ-1051769: fixed an issue that happens if you use uf as AS module - now when you shutdown application it doesn't close fileSystems, it in fact dispose them
UF-27: Increase test coverage for workbench modules
UF-27: compilation error fix
Merge remote-tracking branch 'upstream/master'

Conflicts:
	uberfire-workbench/uberfire-workbench-client/src/test/java/org/uberfire/client/mvp/PanelManagerTest.java
UF-27: Creating ActivityBeansCacheTest, some refactorings and structure for some other tests