Submission style (#181)

* color definitions from design spec added (day & night)

* common:
- adjust style of button & buttonPrimary
- adjust style of textTitle
- adjust style of textMultiline

submission intro:
- simplify the layout
- change headline style

* Changes to TAN contact page

Added operating hours and changed style/string values slightly.

* submission dispatcher fragment
- style update
- text typo fixed

* updated test result illustrations

updated test result illustrations, changed button colour

* Update strings.xml

slight text change to match style

* submission warn others:
- scrolling behavior fixed
- style updated
- illustration replaced

* submission done fragment:
- style updated
- first behavior row exchanged

* submission done fragment: illustration content description

* submission tan fragment: style updated

* replace colorGreen & colorRed with semantic colors

* - unused color removed
- colorRiskCardIncreasedRisk and colorRiskCardLowRisk referencing semantic colors

* submission status cards style update

* emphasized button text color in dark mode adjusted

Co-authored-by: Oliver Zimmerman <oezimmerman@gmail.com>