Feature/group plan info (loomio#6333)

* subscription card/modal, first pass

* only show limits if there are any

* translations

* tweaks

* tweaks

* show expiry date if trial

give html editor focus a yellow line

overhaul version system, simplify (loomio#6293)

* overhaul version system, simplify

* link to github releases page

add .xml to link target

bump version to 2.0.0

bump version to 1.9.400

bump version to 1.9.349

remove commas and unused classes

bump version to 1.9.265

bump version to 1.9.262