* Common directory now CodeSnip.4 instead of CodeSnip and main database folder is now Database instead of Data.
* Per user directory now CodeSnip.4 instead of CodeSnip and user database is now UserDatabase instead of UserData.
* Common config file now Common.config instead of Common.ini.
* Per user config file now User.config instead of User.4.ini.
These changes made so that change of encoding / format used for various files won't prevent any pre-v4 programs from working because their copies of files remain unchanged. Also so that uninstalling an earlier version of CodeSnip will not remove v4's database and vice versa. Finally, new database formats can be used without clashing with older versions.
