Support for file urls.
Added unit test to file-url pull request
Some more testing on file uri:s with a approach of accessing files with absolute path names.
Merge pull request #98 from AndersBillLinden/master

Some more testing on file uri:s
Throw exception if we try to link to a file url from an online document. Also fetching referrer from the history stack. Required: onlinetest.
Merge pull request #102 from AndersBillLinden/master

Throw exception if we try to link to a file url from an online document....
Merge remote-tracking branch 'upstream/master'

Conflicts:
	SimpleBrowser/Browser.cs