added warning for results with few answers
changed when and where warning is shown
translations
removed comments; refactored elifs
refactoring warning calculation
don't show warning if no answers were given
language updates
Merge pull request #381 from janno42/few_answers_warning

Few answers warning
add number of participants and percentage to excel export
language updates
fix missing parts of translation
added icons to staff view and changed buttons
switch link and button functionality for reviewing/listing comments
changed label
Merge pull request #382 from janno42/staff_view_icons

Add icons to staff view
Merge pull request #387 from janno42/export

add number of participants and percentage to excel export