Instead of just including the error category names, include the number
of errors each category has, to make it easier to collect aggregate
stats.
This changes the structure from an array to an object, in JSON, but I'm
not aware of any clients using these specific fields yet.
Change-Id: Iaf942b923a0f4047721055ad9cb48aacc5aa6784
Instead of having a complex auto-increment category manager that had
additional caching, just hardcode the (currently 6) ids for each
category, which allows us to simplify a lot of code.
If Parsoid sends a lint error in a category that we don't know about, it
is silently dropped.
Bug: T151287
Change-Id: Ice6edf1b7985390aa0c1c410d357bc565bb69108
linter_cat is now an int ID that points to a row in the new
lint_categories table.
The mapping between category names and ids is all handled in PHP, and
cached in APC.
Note that you will need to drop the `linter` table manually and re-run
update.php for this to take effect.
Change-Id: I369d9b4d8d08289b4a20d1cd29a2e327bad28ef8
