git part 2

Fork, clone, add to workspace, new branch, changes, push - ready with formatting issues. SSH and merge request are not here yet. Introduction slide is half ready.

theme

-Subproject commit 7263f64265bb1b013ca4c15d8d88a20e4f58de93
+Subproject commit c3e93d2f85e3b33de54afbad2f29fb35dd192dda