set questionwall initial font size to 200

Closes #417

See merge request arsnova/frag.jetzt!414

Merge branch '409-clicking-on-a-question-should-open-the-answer-view-without-switching-to-full-view' into 'master'

deactivate fullscreen for question expand

Closes #409

See merge request arsnova/frag.jetzt!413

Merge branch '411-question-focus-increase-the-default-text-size-to-200-and-display-the-text-scaling-slider' into 'master'

add slider to questionwall

Closes #411

See merge request arsnova/frag.jetzt!412

change mobile standard theme to light theme

Closes #407

See merge request arsnova/frag.jetzt!411

set standard desktop theme to light theme (arsnova)

Closes #407

See merge request arsnova/frag.jetzt!410

user can delete their questions

Closes #377

See merge request arsnova/frag.jetzt!409

reposition rename categories

Closes #405

See merge request arsnova/frag.jetzt!408

Merge branch '370-do-not-open-the-question-board-in-full-screen-mode-only-the-question-focus-should-always-be' into 'master'

fullscreen for questionwall not for questionboard

Closes #370

See merge request arsnova/frag.jetzt!407

Merge branch '387-providing-link-text-that-describes-the-purpose-of-a-link-for-anchor-elements' into 'master'

Resolve "Providing link text that describes the purpose of a link for anchor elements"

Closes #387

See merge request arsnova/frag.jetzt!404

Resolve "Add Tags for Questionwall"

Closes #359

See merge request arsnova/frag.jetzt!406

resolve add tags bug

Closes #401

See merge request arsnova/frag.jetzt!405

add question categories

Closes #392

See merge request arsnova/frag.jetzt!403

add markdown for question focus

Closes #390

See merge request arsnova/frag.jetzt!402

Add description to answer question icon

Closes #396

See merge request arsnova/frag.jetzt!401