New alias pd=perldoc
Vim: F2 now starts perldoc for current filename.

1. Have a Perl file opened in the current buffer.
2. Hit F2
3. ???
4. PROFIT!!!!!
New aliases and changed default $EDITOR to vim.
Tweaks for git, vim and in templates.

Git aliases: b for branch, ci for verbose commit and d for diff. Vim sets
filetype=diff for git commit messages. Fixed coding style in template.pm and
added vim modeline to template.sh.