93-creating-new-edit-template

What I 've done:
- new.html.haml with heading translation
- edit.html.haml with heading translation
- added gem rails-bootstrap-datepicker (discussed on slack)
  (diffrent behaviors with date_of_birth and joined_date implemented)
- added js to hide/unhide checkboxes
- 2 controllers action new, edit
- routes for new and edit. (Others also included with only: new, edit doesnt work)
- added translation pl.yml and en.yml
- fixed requests in last comments
- added Addresses template fields (not connected to database). (There is some work in Address and Shooter controllers to get this work in view)