Removed all @category, @package, and @subpackage annotations

- Per #2743, and following on #2953 and discussion on the ML
- Also removes empty docblocks, and empty lines at the end of docblocks
- Library only; phpdoc is never run on tests anyways, and did not want to
  potentially create breakage due to test expectations that relied on
  annotations. At this time, all tests pass.
Remove category trait

- Was misspelled as "catagory", so my script missed it.
- also updated year to 2013
More catches from @Maks3w

- Many of the classes had malformed docblocks:

/**
* @package ...
* @subpackage ...
*/

- Some had subversion strings!
Merge branch 'feature/docblock-simplification' into develop