Fix issues with styles not getting applied correctly

[rubengees]

The previous approach had the problem, that styles were not picked up correctly in the Fragment. This was notable especially with the colorPrimary, which did not appear in the overscroll effect.

Before	After

Code changes

• applyStyle (with force = false) is now in use, to only merge our custom mal attributes in, but leave the rest of the theme as it was.
• Cleanups for the style itself, properly inherting from Theme.Mal theme. windowActionBar and windowNoTitle were removed, because they are already set in the parent Theme.AppCompat.Light.NoActionBar.

[daniel-stoneuk]

Brilliant, thanks for the PR and noticing the issue.