some minor improvements...

[DJCrashdummy]

i've got some ideas for minor improvements, which are not essential, but would still be very nice to have... so i've collected them and noted in one issue:

• [x] collapse the dialpad automatically as soon as you swipe up to scroll the history to maximize the space for the subject you are searching through.
• [ ] colours not just for the icon for "missed calls": let me suggest green for "answered calls" (as obvious as red for "missed calls") and blue for "calls you started" (as neutral colour, because it is not 100% sure if you reached someone or not).
• [ ] open (not just close) the burger-menu via hardware-button.

[joeyLaus]

Agree for the first 2 improvements. However the third point does not really bother me as my phone does not have a hardware button besides the lock button.