Firefox: Fix static loading icon

See:
	- https://bugs.archlinux.org/task/37576
	- https://projects.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/firefox&id=78bb95c198b4871b1c0f90b8c88f3d1b0de3aa3f

It's already fixed in the package but I don't want to wait for it. :-)
Mutt: Decouple sn2mail-*
Vim: Workaround for printing UTF-8 stuff
sxiv-config: Sync with upstream
Vim: Save all swapfiles in my home directory

No more "echo '*.swp' >.git/info/exclude" ...
Vim: Minor tweaks
Bash: Fix german comment