Fixed single and other odd placement of asterisk signs. Closes tomaz#96.

**Note:** This should resolve the issue, although the whole processing of single asterisk as bold marker makes the code quite fragile. The best solution would be to revert to standard Markdown and stop handling single asterisk as bold. This might break existing users comments somewhat, but should provide more stable platform for the future...

Application/GBCommentComponentsProvider.m

@@ -170,11 +170,11 @@ - (NSString *)codeSpanEndMarker {
 }
 
 - (NSString *)appledocBoldStartMarker {
-	return @"~!#";
+	return @"~!$";
 }
 
 - (NSString *)appledocBoldEndMarker {
-	return @"#!~";
+	return @"$!~";
 }
 
 #pragma Properties