Only prohibit users from using Thanks if they are blocked from the
associated page. This allows partially blocked users to use thanks
most of the time.
It also allows blocked users to thank on their own talk page, if
they are allowed to edit it, even if they are sitewide blocked.
Bug: T221371
Change-Id: Ic99ec38ea200e806963951b2dd67e56ecde63752
See I2291c69d9df17c1a9e4ab1b7d4cbc73bc51d3ebb for the anticipated
hard-deprecation of this method in core.
Bug: T197492
Change-Id: I5d4ec96afe82910ffd18377b5f5f94405f73e9eb
This extension is useless without Echo, and the API modules already
disable themselves if it's not installed. Just absolutely require Echo
to be installed.
Change-Id: I653eea78668bfe0875bc5a33e2d45607106d4ee5
