Improve on 9255: don't be over zealous with whitespace removal

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code@9262 5227b50d-9349-4574-b055-4b0a7525e11c
Fix Living people category check for {{refimprove}} --> {{BLP sources}} conversion

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code@9263 5227b50d-9349-4574-b055-4b0a7525e11c
More regex tweaks as suggested by User:Tmg

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code@9264 5227b50d-9349-4574-b055-4b0a7525e11c
Specific error handling for https://en.wikipedia.org/wiki/Wikipedia_talk:AutoWikiBrowser/Bugs#InvalidOperationException_in_UserPrefs.SavePrefs

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code@9265 5227b50d-9349-4574-b055-4b0a7525e11c