[Feature] improve search bar

[SanderDevisscher]

I think it would be nicer to hide the navbar behind a button shaped as a looking glass on the right, next to "contact".
Or at least replace the downwards arrow with a looking glass.

IS:

Could be option 1: hide the searchbar:

Could be option 2: just replace the arrow:

@jimcasaer @LynnPallemaerts @soriadelva @RuttenAnneleen which do you prefer ?

[LynnPallemaerts]

@SanderDevisscher I'd go with option 2. Option 1 is nice, but not very visible

[RuttenAnneleen]

Option 2 as well

[SanderDevisscher]

@mvarewyck it is safe to say the majority votes for option 2: replace the arrow with a looking glass