* Add filter parsing to rule list filters
* Add unit tests for label parsing
* Make label operators an enum
* add example for parsing function
* Update labels operator regex
* Add tests to rule list for filtering
* add additional test for testing alert instances filtering
* Use tooltip for query syntax example
* refactor to use Matchers for filtering
* Update docs for label filtering on rules list
* style fixes
Nathan Rodman
5f0bc252bc