Several improves in CodeEditor and contextual menu for files
Merge pull request #1386 from diegosarmentero/master

Several improves in CodeEditor and contextual menu for files
some fixes and adding shortcut to expand combo file
Merge pull request #1387 from diegosarmentero/master

some fixes and adding shortcut to expand combo file
shortcut to close opened file
Merge pull request #1388 from diegosarmentero/master

shortcut to close opened file
Several improves in Main Container refactoring.
Merge pull request #1389 from diegosarmentero/master

Several improves in Main Container refactoring.
reopen last closed files
Merge pull request #1390 from diegosarmentero/master

reopen last closed files
some improves and remove unnecessary code
Merge pull request #1391 from diegosarmentero/master

some improves and remove unnecessary code
adding qt resource file and chevron image for the combos
Merge pull request #1392 from diegosarmentero/master

adding qt resource file and chevron image for the combos