Fix for https://en.wikipedia.org/wiki/Wikipedia_talk:AutoWikiBrowser/Bugs#ArgumentOutOfRangeException_in_RegExTypoFix.DetectTypo

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@10456 5227b50d-9349-4574-b055-4b0a7525e11c
Add tests for DetectTypo

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@10457 5227b50d-9349-4574-b055-4b0a7525e11c
Check whether page loaded successfully

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@10458 5227b50d-9349-4574-b055-4b0a7525e11c
Increase coverage of DetectTypo tests

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@10459 5227b50d-9349-4574-b055-4b0a7525e11c