Release 1.3
Merge branch 'master' of github.com:ghinda/gmail-righttasks

* 'master' of github.com:ghinda/gmail-righttasks:
  Use a different method for finding the Tasks container, by searching through the .AD containers for the. This fixes conflicts with the "New Message" and other popups.

Conflicts:
	src/manifest.json
Check if the contents of the tasks iframe have loaded, by checking for a class on the body element inside it. This fixes the issue with the styles in the tasks iframe (that are making it's height fluid) not being applied. Fixes #1
Check for the height of the top bars every 5s, to fix the issues caused by selecting a different layout (cozy, comfortable, etc.) without triggering the resize event.