Revert "Use terminfo for ANSI colors in bash prompt"

This reverts commit 3e3223d4521adaae789a3f93cb9f18d43562431f.
Load System interactive shell settings (bashrc)
Check bash_prompt files are readable before use
Check for dircolors support before using ls color
Add an "alert" alias for long running commands

Use the alert like this:
    sleep 10; alert
Move vless alias from profile.d to bash_alias