Bash-Support: Made several map non-recursive.

- Made several map non-recursive.
- Changed several 'normal' to 'normal!'.
Perl-Support: Made several map non-recursive.

- Made several map non-recursive.
- Changed several 'normal' to 'normal!'.'make script executable' is a toggle / Perl interpreter can be set.
Latex-Support: Fixed possible mapleader interactions with other plugins.

- Fixed possible mapleader interactions with other plugins.
- Changed several 'normal' to 'normal!'.