Quick hack to fix the broken hack noted in bug 15301

Quick hack to fix the broken hack noted in bug 15301

Use of:
			$action_desc[0] = strtolower($action_desc[0]);
is horrible wrong for a few reasons:

1) The first-byte match fails for all non-ASCII characters -- use lcfirst()!
2) System strtolower() or lcfirst() may not work for UTF-8 or lang-specific issues properly; use $wgLang->lcfirst()
3) You shouldn't be forcing things to lowercase here anyway, you can't know it's correct gramattically.

This whole message output should be redone cleanly; either all the rights info messages should be designed to work in an inline list sentence, or they should be formatted as stand-alone text strings using a <ul> or something.