Bash: make `rm`=`rm -Iv` alias Linux-only

OS X `rm` doesn't have those options.
Vim: update plugins in ~/.janus to latest versions (+5 squashed commits)
Squashed commits:
[08d70a3] Vim: Add vim-latex submodule back with correct URL
[8d234b0] Vim: Remove vim-latex in attempt to fix
[894bfb0] Vim: Update vim-latex URL (again, for reals)
[dfd84f6] Vim: update plugins in ~/.janus to latest versions
[cfbe9cc] Vim: update vim-latex submodule URL to correct one (+1 squashed commit)
Squashed commits:
[5bac245] Vim: update plugins in ~/.janus to latest versions
Vim: add tern_for_vim plugin