Move location to two separate columns in the database: linter_start and
linter_end. This allows us to have the database enforce the uniqueness
of those fields, instead of just relying upon the PHP code to do so,
which could be bypassed since we have multiple servers and concurrent
processes.
Change-Id: I3e67ce1b7cb3c93866a388ec3248af4cff2a81e0
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
