Fix translations and add more tests for them

Checking now if there are HTML tags iff there are any in en.
Better failure output.

Change-Id: I3664c56cb6282b3b60b312b1f27e7d26f87f8d01
(cherry picked from commit fdb420ade518b886818381e71d170acc1c76318b)
Merge "Fix translations and add more tests for them"