Website: update the example of the homepage
Website: fixed script on the homepage
Fixed the cookie manager: it ignored session cookie

Closes #216
Website: doc about frames
Fix: webpage.frameContent should use the same code as webpage.content

Closes #218
Fixed regression: webpage.close() was called twice

Refs #198
Fix error at startup about cache, with Gecko 32

Closes #208
Merge branch 'v0.9'

Conflicts:
	src/modules/webpageUtils.jsm
	test/initial-tests.js
	test/test-environment.js