Added older browser support to jqLite offset method

Adds another unit test to test that nothing breaks when passing in
arguments to jqLite offset method

Fixes unit test for testing setter jqLite offset. jQuery API accepts
object. Switched the unit test to pass in object.

Removed unit test that would not apply to regular jQuery spec

Since the jqLite implemetation only supports the getter method and not
the setter, the unit test would fail for the original jQuery spec. This
was removed.

feat(jqLite) adds offset getter method to jqLite
Merge branch 'jqlite-offset' of https://github.com/steelsojka/angular.js into jqlite-offset