Begin to add the contact activity
Contact page (1)

* Add icons for the contact page
* Customization of the Contact layout and activity
* Delete string app_name_bis, modify app_name
* Change the number of the version
Contact page (2)

* Working

TO DO:
* Landscape contact page
Modify strings.xml (fr and en)
Merge pull request #9 from hbuyse/addContact

Add contact