Remove vim-seek
Remove riv
Add showmarks refresh mapping
Remove unneeded mapping

\mo refreshes showmarks
Add rst syntax file
Add minibufexpl
Use Leader in custom mappings
Revert "Add minibufexpl"

This reverts commit f573d8f8e6e3892a8a28f41baf0358f5b7b24179.

Conflicts:
	.vimrc
Change showmarks format