Vidtuber 1.1.2

Changes to Vidtuber 1.1.2:

- Improved UI.
- Updated translation catalogs to Vidtuber v1.1.2
- Updated Russian language, thanks to ChourS .
- Updated Italian language by jeanslack.
- Added Vidtuber Slackbuild to https://slackbuilds.org/
- Improved babelutils.py file for update translation catalogs.
- Fixed compatibility issues between versions of the Python requests.
- Fixed "Edit" menu subitems according to user actions.
- Fixed the popup menu (aka context menu) items when right-clicking in the "List of URL's" panel. Enabling/disabling items depends on user actions.
- Added events for selecting/deselecting items on drag N drop panel.