DF-291 fixed compilation error
[DF-291] nullptr replaced with NULL
[DF-4994] Added one more glFinish() cal
[DF-5322] Fix index out of bounds exception
[DF-5321] Fix illegal argument exception while remove keyboard layout view from window manager
Merge branch 'to_master' into development
[DF - 291] Fix variable names.
Merge pull request #276 from ya-888/development

[DF - 291] Fix variable names.
Merge branch 'development' into per_commit_tests