Updated to work with ZC 1.5.3

Among a few other things, this has been updated to work with ZC 1.5.3 (replacing usages of mysql_ functions with mysqli_ functions when working in a ZC 1.5.3 environment.  A better solution is needed than just identifying that working with ZC 1.5.3; however, this method was quickly successful.)

Modified the importing of basic attributes to provide a sort order in increments of 10 after the first is set to 1. (so, 1, 10, 20, 30, etc...), Added some "optional" capability if Stock by Attributes has been installed, but currently it only works with an SBA that has a table with specific fields (number and name).

Please update as soon as possible.  Essentially builds off of the existing code.