Don't check for new version when updating or installing.

Fixes #1617.
Sync ezSQL
Send requests to AYO using `https` whenever possible
Checks. Fix #1608.
Simpler base encoding checks
Move function to db file. Comply to debug mode.
Constructor constructor defined twice twice, oops
Sync ezSQL
Don't forget to call parents' constructors, duh.
Require connection handle before running a query
Check if DB server is dead
Heh. Just found out about str_shuffle().
Merge branch 'master' of https://github.com/YOURLS/YOURLS
Comply to RFC 3986. Fixes #1630.
Constructors must not return values
Notice if translation not found. Fixes #1628
Allow unsetting locale
phpdoc clarification
Move requires in their own function (for UT)
Filterable number of rows in admin view. Fixes #1641

Related: #1354