1.) module dependency updated from jade 1.11.0 to pug 2.0.0-beta3
2.) All references to Jade have been changed to Pug
3.) /srv/web/jade.js is renamed to pug.js
4.) all template files renamed accordingly
5.) "mixin somename" is automatically considered a declaration, invocations must use "+somename"
6.) variable interpolation is no longer supported inside element attributes, use direct references and string concatenation instead.
7.) bumped minor version
