Added IE Mode Request Conversion and unit tests
Browser fixes for IE mode request changes

* Don't fail on content-type check when no content-type present,
  should only be GETs but some default to application/octet-stream as
  well
* Do same check in XDomainRequest handler as in native
* Corrected some testing to allow for not all versions of an LRS to be
  configured
* Correct some tests for the different IE variants
Merge pull request #83 from Nolan330/IEMode

Added IE Mode Request Conversion and unit tests