Add tmux to common programs. Generate german locale. Remove unneeded empty lines.

roles/common/tasks/main.yml

     - ruby
     - screen
     - sudo
+    - tmux
     - unattended-upgrades
     - vim
     - zsh
 - name: Set data directory permissions
   file: state=directory path=/data group=mail mode=0775
 
-- name: Ensure locale en_US.UTF-8 locale is present
+- name: Ensure US English locale exists
   locale_gen:
     name: en_US.UTF-8
     state: present
 
+- name: Ensure German locale exists
+  locale_gen:
+    name: de_DE.UTF-8
+    state: present
+
 - include: users.yml tags=users
 - include: apache.yml tags=apache
 - include: ssl.yml tags=ssl

roles/common/templates/apticron.conf.j2

 EMAIL="root"
-
 NOTIFY_NO_UPDATE="0"
-
 NOTIFY_NEW="0"
-