MAP: Handle CSS style and extra tags from EMAIL HTML Body content.

Remove CSS style from original EMAIL Body HTML content and extra tags
that Html.fromHtml() utility doesnot support parsing, for GetMessage
Response from MSE.

Change-Id: Ib30c65ae90166688004af6fcc77496dd1bae00e5
CRs-fixed: 509731
Merge "MAP: Handle CSS style and extra tags from EMAIL HTML Body content."
Merge remote-tracking branch 'caf/jb_2.5' into cm-10.1