Move documentation from gh-pages branch to 'docs' folder

To prepare the migration to 3.0, we need to change the location where the documentation is generated from.
Having a gh-pages branch makes it hard to synchronize the code and the docs. Having a "docs" folder in the repo itself simplifies this.

docs/bower_components/bootstrap/grunt/.jshintrc

@@ -0,0 +1,7 @@
+{
+  "extends" : "../js/.jshintrc",
+  "asi"     : false,
+  "browser" : false,
+  "es3"     : false,
+  "node"    : true
+}