* rename `FirstParentFilterToggled` to `EnableFirstParentInHistories`
* remove `FirstParentFilterEnabled` from repo settings - it should not been saved
* move toggle button from repository toolbar to histories switcher
* tooltip translations
* new icon for `Icons.FirstParentFilter`
* extends commit graph to support `--first-parent` option
need help in two issues:
1. use better icon - I just reused the Filter icon
2. lines of merge commits are still rendered - need to skip them since they don't link to any commit when filter enabled. I didn't manage to solve by my own right now
Using issue tracker instead of built-in supported commit web link is based on the following reasons
* repo may have multiple remotes
* it is not good to open an context menu to choose which web to visit with multiple remotes
* some remote servers are not supported by this app
* add missing translations and it's no need to add `OnPull` suffix since it already has a prefix `Text.Pull.`
* when enable fetching all branches of selected remote, use merge/rebase command instead of pull
* re-arrange orders of options in pull popup panel
* default enable `Fetch all branches`
