rhbz1031468 - Fix NonUniqueObject exception when saving project's copy trans options.

Let hibernate handle the caching of the project object (probably second level), instead of keeping a view-level cached version.
Also fix the re-written url for copy trans options as it was inserting extra parameters (i.e. cid) in the middle of the url.
Merge pull request #278 from zanata/rhbz1031468

rhbz1031468 - Fix NonUniqueObject exception when saving project's copy trans options.