[Improvement] Make form sections collapsible on tap

[aniri]

When the user taps on the section details, the questions from that section should be collapsed.

TBD: should we show the number of completed questions from each section when questions are collapsed?

[CristiHabliuc]

@aniri does this mean the sections will be fully collapsed by default? or fully expanded? both options have pros and cons obviously

[aniri]

@aniri does this mean the sections will be fully collapsed by default? or fully expanded? both options have pros and cons obviously

@CristiHabliuc I think we could keep them fully expanded by default.