Update plugin.
Improve Pascal snippets.
vimrc: Use startify's SSave instead of mksession.
UltiSnips/all: Priority & ellipsis.
Fix plugin directory name.
TeX-Snippets: Add item*.
vimrc: Don't remap <Esc>

It caused strange effects on terminal vim in gnome-terminal.
vimrc: Fix disabling italics & <F5>/<C-CR> support on Ubuntu.
Update plugins.