only show translation buttons when translation is active

current state

translation buttons are always visible

goal

• hide the translation buttons by default
• show then only when the translation is started via "Start translation" from the sidebar
• hide them again then translation is ended via sidebar

changed milestone to %WE update 21-2

changed title from only show translation buttons when translation is started to only show translation buttons when translation is active

assigned to @toni.beier

assigned to @Beier and unassigned @toni.beier

changed milestone to %WE update 21-3

assigned to @toni.beier and unassigned @Beier

mentioned in merge request !30 (merged)

closed with merge request !30 (merged)

closed with commit cdd5c7c3