Revert "Fixed output of user prompt colors"

This reverts commit ac62724da5a9ad91b80618338f8413516e29a500.
Messed up command completion.
Variables wrapped in double quotes in spacing()

Vars that can contain spaces or other special characters mess up the syntax.
Modified $PROMPT to single line; cleanup.

With multiline PROMPT weird things happen, for example when resizing.
Modified CTRL+L behaviour to execute precmd() prompt line
Renaming functions. Fixes git autocompletion