TRUNK-5065 Test saving allowed locales without default
add test that shows its not allowed to save a locale list via global
property if the list doesnt contain the default locale currently set.
Use adminService from test setup in AdminServiceTest
we prepare the adminService in the @Before method for every test so
there is no need to get it from the Context again in each test
Remove boilerplate javadocs in AdministrationServiceTest
these javadocs are often out of date, just take up space and repeat the
method signature that is under test anyway so navigating to it is easy
already via the test itself
