In the Log/History view, I want to have a checkbox saying "First Parent Only" (maybe right next to the "Show Remote Branches" checkbox item). When checked, The log view will use the --first-parent flag. I would expect, then, to see only a single line of history for a branch. If multiple branches are being shown (eg. the "All Branches" option), then if the two branches intersect, they will intersect in the Log view as well. When the "First Parent Only" option is not checked, the Log view will behave as before.

This should be exactly like using `git log --graph --first-parent`

The reason I marked it as Major is because this issue is not "Trivial". In an ideal world, everyone knows everything about git and they don't need the GUI to show only first parent. However, I am in a company that is huge and has many, many different people of different paradigms and skills, and as people start switching to git, one of the main points of confusion (and continual frustration and confusion) is that the Log view is chaotic and hard for them to use.