Moved bootstrap.html and www folder to contstants and referenced from getters

UPDATE: move literal values to constants and referenced from getters (so they could be changed in subsequent projects)

Currently the "bootstrap.html" and "www" folders are referenced by literals in private methods.

By moving those literals to constants and then referencing those values through getters, they could be changed in other projects with minimal impact.

This was helpful on our current project, as it allows us to use a precompile step, so development could continue to use one file, while deployment could precompile down (such as combining, minification, obfuscation, etc) before sending out without making changes to those files under version control.