Patch up manage members functionality (#4650)
Patch up manage members functionality (#4650)

* Re-add new decision button on group page

* Membership invite directive

* Pull out plus button to directive

* Fix manage members modal

piratas-ar/loomio,loomio/loomio,loomio/loomio,piratas-ar/loomio,piratas-ar/loomio,loomio/loomio,loomio/loomio,piratas-ar/loomio