Add an emoji selector

This allows users to more easily see what kind of custom emojis exist on the instance.

assigned to @hj

added Missing feature label

mentioned in issue #205 (closed)

Today is the first time I use pleroma and I love it, but is need a button for emojis

assigned to @jaredr and unassigned @hj

mentioned in issue pleroma#770 (closed)

mentioned in merge request !706 (merged)

mentioned in merge request pleroma!998 (merged)

mentioned in merge request !736 (closed)

assigned to @feld and unassigned @jaredr

mentioned in commit 2c4e80aa

mentioned in commit 7f6f0257

mentioned in commit 2ee8d213

mentioned in commit 3172b4e7

mentioned in commit f9071dac

mentioned in commit 885f4c99

mentioned in commit 3b78c9c7

mentioned in commit 093f0b23

mentioned in commit b4e53576

mentioned in commit 2ab915b4

mentioned in commit 820a6543

mentioned in merge request !895 (merged)

closed via merge request !895 (merged)

mentioned in commit 501208d3