Qualify clojure.core symbols

I was having problems with the raw use of list in the :Doc command as
well as require in :Require. Fully qualifying them fixes the issue.
Fix spacing in error
Support speclj in :A

Closes #45.
Allow non-interactive :Connect

Closes #46.
Better representation of require errors

Should help with #56.
Typo fix
Point at vim-clojure-static in help file
Assume Leiningen 2 in documentation
Clarify dependencies
Remove old vendored classpath.vim
Rename foreplay.vim to fireplace.vim