beta update #2

Issue #32 fixed in which boxes using default title get a decription as well

Issue #31 fixed by porxy of other changes

Issue #30 fixed by passing correct information to custom box `build_template()` method

Issue #26 should be finished as well

Issue #29 (discussion) add-on modules no longer have to worry about separating template variable for Stereo type modules. It is handled within the core so that devlopers never need worry about this functionality unless they wish to use it.