Merge https://github.com/prati0100/git-gui

* https://github.com/prati0100/git-gui: git-gui: use gray background for inactive text widgets git-gui: Fix selected text colors Makefile: conditionally include GIT-VERSION-FILE git-gui: fix colored label backgrounds when using themed widgets git-gui: ssh-askpass: add a checkbox to show the input text git-gui: update Russian translation git-gui: use commit message template git-gui: Only touch GITGUI_MSG when needed