Bulk-loading templates

Tested and patched the load() function which allows you to import a
collection of templates (in object form) and bowtie will compile them
all automatically. You can call an object by it's original property path
in the object (minus the object's name, of course). load() also supports
the ability to import a single template and give it an "alias" - ex.
bowtie.load('mytemplates.homepage', template_string)  which then can be
rendered via bowtie.render('mytemplates.homepage', data_object)