Feature/writeschema updates, Feature/webtemplates updates

Hi Simon, if you will...
(1) added an Addresses Template project that you can merge without risks (https://github.com/thorsten-reitz/hale/commit/83b2332788f43ce958eafb255a4b4a827ebad329)
(2) added the JSON Schema Writer and dependencies. This is WIP and only makes sense to be merged if you want to take a look at the run config issues (package uses conflicts)