Tests Fix,Schemes Sorting,Language Sorting

- Tests Fix for 3 DeprecationWarning
- Schemes Sorting and Alternating Row Colors
- Language Sorting and Alternating Row Colors
- Schemes can find upper case schemes, eg File.COLOR
- Language can find upper case language, eg File.QM
- Use with open(file) as f instead of just open(file) on dialogs
- A la grande le puse cuca
- Dont break Traceback text by line wrap
- Add GPL Licence notice where missing
- Dont need to import SIGNAL anymore on dialogs
SIGNAL is back
Just one more was missing SIGNAL
Merge pull request #1476 from juancarlospaco/master

Tests Fix,Schemes Sorting,Language Sorting