* Improve fulltext gambit
* Only search in visible posts
This change relies on the `visibility-scoping` branch to be merged.
* Change posts table to use InnoDB engine
Doing a JOIN between an InnoDB table (discussions) and a MyISAM table
(posts) is very very (very) bad for performance. FULLTEXT indexes are
fully supported in InnoDB now, and it is a superior engine in every
other way, so there is no longer any reason to be using MyISAM.
* Use ::class
* Only search for comment posts
* Add fulltext index to discussions.title
* Fix migration not working if there is a table prefix
* Update frontend appearance
* Apply fixes from StyleCI
[ci skip] [skip ci]
* Show search result excerpts on mobile
Previously a discussion was classified on the front-end as "hidden" if it had zero posts. This was technically a correct statement as the discussion would not be visible to the public... but it also meant that a discussion with zero posts (like one awaiting approval) was impossible for the OP to delete/hide (i.e. indicate that they made a mistake and they don't want the discussion to be approved).
