bashrc: Fix PROMPT_COMMANT blowing up in a VT
mimeapps: Use chromium.desktop as a fallback from chromium-browser.desktop

This should allow it to work on both ubuntu 12.04 and Arch.
Move mimeapps.list to ~/.config according to what arch wiki says.

wiki.archlinux.org/index.php/Default_applications#Using_MIME_types_and_desktop_entries
Move ~/bin to ~/.local/bin

This will allow us to use ~/.local/share and ~/.local/lib as well.
Add function key shortcuts for network, backlight, volume. Also for disabling
shortcuts.