Mail links feature

Added mail links support
Add
"email": "example@example.com"
to sites.json

Some IT notes translation

![mail](https://f.cloud.github.com/assets/1665768/1064103/67dbf902-130f-11e3-813e-12f73eeeca39.PNG)

close https://github.com/rmlewisuk/justdelete.me/issues/155