Resolve "Stop word list as external file"

Closes #718 and #734

See merge request arsnova/frag.jetzt!737

Resolve "Make the export of questions and answers readable"

Closes #725

See merge request arsnova/frag.jetzt!735

Resolve "Allow escape or clicking on the backdrop to close the modal"

Closes #433

See merge request arsnova/frag.jetzt!734

Merge branch '727-moderators-should-have-the-same-rights-for-the-topic-cloud-as-creators' into 'staging'

Resolve "Moderators should have the same rights for the topic cloud as Creators"

Closes #727

See merge request arsnova/frag.jetzt!728

Resolve "The topic cloud does not start from zero in brainstorming mode"

Closes #722

See merge request arsnova/frag.jetzt!727

Adds strinigfy/parse to parse JSON but stringify data to work with

Closes #720

See merge request arsnova/frag.jetzt!726

Reimplements staging.antworte.jetzt for localStorage share test

Closes #720

See merge request arsnova/frag.jetzt!720

Resolve "Do not offer voting for your own question"

Closes #711, #717, and #719

See merge request arsnova/frag.jetzt!719

Resolve "Use new filter inside the Topic Cloud"

Closes #721

See merge request arsnova/frag.jetzt!721

[Ticket: #711][Ticket: #719]

[Ticket: #717]

Resolve "The question list as input for the topic cloud is always zero"

Closes #712 and #714

See merge request arsnova/frag.jetzt!718

[Ticket: #715]