theme selection & gradle update

* it's now possible to change the app theme (light/dark)
* update gradle to version 6.7.1
* update gradle pugin to version 4.1.1
* update kotlin to  1.4.10
This commit is contained in:
2020-11-23 20:11:10 +01:00
parent 0e5c697bce
commit 21b6e358e7
15 changed files with 230 additions and 60 deletions

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