Added .gitignore file to ignore results of builds.
Added support for git commits in Makefile.
b/bardinux-education-task:
(New version: 1.3.3)
    - Added 'geogebra' to dependencies.

b/bardinux-mathematics-physics-task:
(New version: 1.3.6)
    - Added 'texlive-latex-extra' to dependencies.
b/bardinux-proa-desktop:
(New version: 1.3.3)
    - Added script to fix configuration for bardinux-system-restore-tool if is installed.

b/bardinux-system-restore-tool:
(New version: 1.3.6)
    - Fixed the name of the variable INACTIVITY_LIMIT in the sample configuration file.
    - Check if bsrt configuration file exists before import in cleanusers script.
Not released packages:
    - bardinux-education-task (1.3.3)
    - bardinux-mathematics-physics-task (1.3.6)
    - bardinux-proa-desktop (1.3.3)
    - bardinux-system-restore-tool (1.3.6)