fix colors for tty

 * .bash_prompt: do not modify the TERM for tty. It should stay as "linux".
 * .colors: modify color tones for tty (framebuffer only?). DarkBlue which is used for directories was nearly unreadable.
 * .vimrc: now also for tty
Merge pull request #5 from DrVanScott/fix2

fix colors for tty