Log Message:
www/contao44: update to 4.4.8

# Contao core bundle change log

### 4.4.8 (2017-11-15)

 * Prevent SQL injections in the back end search panel (see CVE-2017-16558).
 * Support class named services in System::import() and System::importStatic()
   (see #1176).
 * Only show pretty error screens on Contao routes (see #1149).

# Contao listing bundle change log

### 4.4.8 (2017-11-15)

 * Prevent SQL injections in the listing module (see CVE-2017-16558).