webadmin: implicit quota defs in Common.gwt.xml

Removed the explicit entries for quota queries and actions, as they are
covered by "common/queries/*.java" and "common/action/*.java",
respectively.

Change-Id: I6a6a9c62fddb9a281b9ffd0d36368d56b14b0cbc
Signed-off-by: Allon Mureinik <amureini@redhat.com>
webadmin: Clean up Compat.gwt.xml

Removed unused and non-existent classes from Compat.gwt.xml to speed up
the build.

Change-Id: Ia0fe8a21ad88b274cdb3335c39efb7a9f7fde6ca
Signed-off-by: Allon Mureinik <amureini@redhat.com>
core: Remove unused classes from uioverrides

Removed async_tasks, Encoding and StringBuilderCompat from uioverrides,
as they are no longer required, and just slow down the build.

Change-Id: Id3c9c0cff51f39f47f5b30bd1668b36b8e1ad812
Signed-off-by: Allon Mureinik <amureini@redhat.com>