[iNet Interactive] Add/remove comments

wrt https://github.com/EFForg/https-everywhere/issues/529

Conflicts:
	src/chrome/content/rules/INet-Interactive.xml
[Microsoft] Split false MCB coverage

https://github.com/EFForg/https-everywhere/issues/500

Conflicts:
	src/chrome/content/rules/Microsoft.xml
[OwnCube] Add comment

wrt https://github.com/EFForg/https-everywhere/issues/529
[Rackspace] Split false/broken MCB coverage

Conflicts:
	src/chrome/content/rules/Rackspace.xml

Conflicts:
	src/chrome/content/rules/Rackspace.xml