* Fix systemUiVisibility deprecation warnings
This commit extracts setSystemUiVisibility as
an extension and uses the new API depending on
the Build.VERSION
* Fix splash fragment vector issues
Clip-path isn't available before V24 and
width/height should not exceed 200 dp.
* Remove unused disclaimer fragment header
* Remove unused ic_launcher_round
* Ignore IconMissingDensityFolder lint
Ignoring it because all the images are vector
* Ignore UnusedAttribute lint
It warns about networkSecurityConfig which
is used only in debug builds to allow
user SSL certificates. Lint says it's not
available before v24. But it doesn't matter
since before v24 the user SSL certificates
were allowed by default.
* Use plurals for disclaimer count down
