Create /decrypted directory even if encfs is not used.

Helps with issue #120.

roles/common/tasks/encfs.yml

 - name: Create encrypted directory
   file: state=directory path=/encrypted
 
-- name: Create decrypted directory
-  file: state=directory path=/decrypted
-
 - name: Add mail user to fuse group
   user: name=mail append=yes groups=fuse
 

roles/common/tasks/main.yml

   notify: restart apache
   when: ansible_distribution_release == 'trusty'
 
+- name: Create decrypted directory (even if encfs isn't used)
+  file: state=directory path=/decrypted
+
+- name: Set decrypted directory permissions
+  file: state=directory path=/decrypted group=mail mode=775
+
 - include: encfs.yml tags=encfs
 - include: users.yml tags=users
 - include: ssl.yml tags=ssl