example.config: small updates

Explain "prefix" and set default email to @example.com address (no need to
annoy the google mail admins)
Fix content-type for download
Example of i18n using tags
Merge pull request #1 from pgeorgi/configs

example.config: small updates
Removed example from JP resource for true fall-back
Merge branch 'master' of github.com:churchtools/churchtools_basic
Merge pull request #2 from pgeorgi/configs

Fix content-type for download
I18n - Internatialize login screen and prepare modules
Merge branch 'master' of https://github.com/churchtools/churchtools_basic
Add unit tests for i18n library

In fact, move the existing examples that reside in a comment so
that they can be run.

To execute, execute in the toplevel directory: (phpunit must be installed)
$ phpunit .
Merge pull request #3 from pgeorgi/unittests

Add unit tests for i18n library
Add the resource files for home page and profile page.
Change location of flot library to system/assets
Some Englisch mistaeks fiksed! :)
Add i18n to auth module
Seperate mapping for each module
Cleaning churchservice from old stuff
(CS) Add authorization for viewing and exporting facts and repair export.
(CDB) Remove old checkin
(CDB) Add permission to push/pull people to archive