Solution for bakground-color in textlines.

Not the best solution but it will change the background for codelines in
a small box, in 3boxes template.
Merge remote-tracking branch 'origin/codeviewer-master' into codeviewer-buggfix-textlines-#420
Chagned linescolor in all the themes

Chagned linescolor in all the themes, to solve the lines ends to early.
#420
Merge pull request #438 from HGustavs/codeviewer-buggfix-textlines-#420

Codeviewer buggfix textlines #420 MKAAAY