This reverts commit 8577f8d4.

* Change teleTAN from 7 to 10 characters

# Conflicts:
#	Corona-Warn-App/src/main/res/values/dimens.xml

* adjust TAN input to updated design

# Conflicts:
#	Corona-Warn-App/src/main/res/values/dimens.xml

* move TAN to upper case centrally

* styling of filled/empty TAN input spaces

* replace gradient at TAN entry with solid shape

* fix TAN input dash style

* add teleTAN input validation

* ensure valid characters are entered
* block further input if character is invalid
* mark invalid characters accordingly
* show error message if character is invalid
* calculate checksum
* show error and prevent the user from clicking „next“ if checksum is invalid

* code formatting

* Add include to TAN fragment

* Update teleTAN entry info text

* remove code smells

* Change detection of valid characters in TAN to whitelist

* add tests for TanHelper

* add tests for SubmissionTanViewModel

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>

* replaced custom header with toolbar

* removed fadingScrollView

* toolbar

* excluded translation from lint for dev

* main header

* fixed id

* icon fix

* added navigation to risk details

* illustrations prepare for dark mode

* removed unused ressource

* dark mode illustrations submission flow

* removed legacy fragment

* assets updated

* data privacy onboarding text

* illustration icons submission

* fixed privacy illustration

* behavior icons

* fixed main light mode illustrations for submission

* - unused SubmissionSuccessDialogFragment.kt removed

* - remove merge_guidelines_common.xml
- fragment_submission_test_result.xml scrolling behavior

* - submission flow text styles replaced
- submission positive result card updated

* - submission status cards updated

* - remove old text styles
- lint error fixed

* cleanup styles from xml

* updated settings illustrations

* onboarding illustrations

* information illustrations

* updated main illustrations overview / share

* icon adjustments

* refactiored illustiration usage

* grey background & removed light button elevation

* light theme

* dark & stable colors

* fix

* onboarding text styles

* main overview text styles

* information screen text styles

* risk

* fix

* settings styling text

* settings text

* saved risk level display bound to model

* fixed nullpointer

* adjust settings styling / layout

* main overview small design adjustment

Co-authored-by: Luka Harambasic <luka.harambasic@sap.com>

Co-authored-by: marcmuschko <marc.muschko@sap.com>

* font styles from spec

* merge

Co-authored-by: marcmuschko <marc.muschko@sap.com>

- enable disabled state for primary button
- simplify submission tan

* 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>

* teletan
- update texts to match lower and upper case
- remove similar character exclusion
- filter spaces and non-alpha numeric characters

* qr code scan: update required pattern

* qr code: refactor GUID parsing

* introduced settings navigation helper

* added connection and bluetooth stati to main and tracing settings

* moved strings

* removed unnecessary backgroundTint

Co-authored-by: marcmuschko <marc.muschko@sap.com>