[Caja] Loosely parsing text "†" as "†" (issue1866052)

[Gagandeep singh]

Reviewers: *google-caja-disc...@googlegroups.com*,

Description:
Adding functionality in caja to be able to do more lenient parsing and
converting text "&#8224" to "†".


Please review this at http://codereview.appspot.com/1866052/show

Affected files:
 M     src/com/google/caja/parser/html/Html5ElementStack.java
 A     tests/com/google/caja/parser/html/Html5ElementStackTest.java


Thanks
Gagan