Replace evil-matchit

Remove evil-matchit references and add two keybindings to existing
web-mod functions instead.
Move evil-related calls higher in execution order
Ignore nxml mode in smartparens

If it is not ignored, then the global smartparens mode will
mess up the default auto-completing behaviour of elements.
Add requires to prevent lint errors
Add html snippets to web-mode
Add evil-leader bindings to web-mode functions