reorganise templates folder
Completely redid HTML templates and stylesheets.

List of changes:

* Split up the base LESS file.
* Normalised LESS variable names (no camel case, american english,
  -color suffixes, etc)
* Reduced the number of special style classes and replaced them with
  generic, reusable classes.
* Removed all id attributes used for stylistic purposes.
* Less styling of elements, more styling of classes. Global element
  styling is used minimally and will likely be reduced even further.
* Removed Bootstrap to reduce compile time and, more importantly, to
  make the stylesheets less cluttered.
* Better use of includes in HTML templates
* Use of HTML5 semantic tags where appropriate.
* Upgraded to lessphp 0.4.0
* Made the horrendous template whitespace stripper only work on .html
  files.
* Added IE=edge thing for IE compatibility.