rta button
Fixes a bunch of saycode things. Objs can now hear radio talk.
Added a proper strip_html() function.
Fixed #4959
Merge branch 'master' of https://github.com/tgstation/-tg-station into 420

Conflicts:
	code/modules/admin/admin_verbs.dm
Fixes the spacecube server start runtime (index out of bound for array) by making the z_level list an associative list.
Merge pull request #4983 from paprka/armorbutton

Reactive Teleport Armor action button
Merge pull request #4988 from Miauw62/420

Fixes a bunch of saycode things.
Merge pull request #5027 from Menshin/spacecube_hotfix

[hotfix] Fixes the spacecube runtime at server start