Revert "Added a script called `www` which launches firefox or luakit"

This reverts commit c1df502d6198af17032771a3002cd2a64325e7a7.
Use luakit by default
no need to define a application specific esc shortcut
Weechat: Added buffers.conf
Updated gitignore
jabber -> xmpp
Luakit: fix link selection
Luakit: don't accept third party cookies
Luakit: Delete cookies on exit
Luakit: Updated cookie removal code
Luakit: Hide ads on zeit.de
Luakit: custom stylesheets for reddit
Update submodules
Luakit: Fix github font in plain text readmes
Luakit: custom stylesheets for duckduckgo