refactor Tokens.vue content in AccountCard and create better UI for group memberships

title says it all

added Good first issue label

assigned to @gj4210

changed title from Tokens.vue content in AccountCard refactoren to refactor Tokens.vue content in AccountCard

added workflowupcoming label

removed Good first issue label

changed title from refactor Tokens.vue content in AccountCard to refactor Tokens.vue content in AccountCard and create better UI for group memberships

mentioned in issue #420 (closed)

mentioned in issue #619