[WIP] Support multiple @find-by annotations

Still open tasks but basic support for multiple ```@find-by```. Still requiring some new unit tests and ```ElementCollection``` see #48 for more details.

Closes #13
Class name suggests that it's a typified page, but yet you extend it from `Page` and not `TypifiedPage` class. I wonder how it works. Probably you use `TypifiedPageFactory` somewhere in the the middle and that's why it might work.