Replaced hardcoded symlinks with a2ensite in apache config

Author: fpapadopou

scripts/install_apache.sh

@@ -8,6 +8,6 @@ PACKAGENAME=eratosthenes
 sudo cp /opt/codebender/$PACKAGENAME/apache-config-2.4 /etc/apache2/sites-available/codebender-$PACKAGENAME
 cd /etc/apache2/sites-enabled
 # Add the vhost configuration file to the enabled sites
-sudo ln -s ../sites-available/codebender-$PACKAGENAME 00-codebender.conf
+sudo a2ensite codebender-$PACKAGENAME
 # Reload apache in order to enable the new configurations
 sudo service apache2 reload

scripts/travis_install_apache.sh

@@ -8,7 +8,7 @@ PACKAGENAME=eratosthenes
 sudo cp /opt/codebender/$PACKAGENAME/apache-config-2.2 /etc/apache2/sites-available/codebender-$PACKAGENAME
 cd /etc/apache2/sites-enabled
 # Add the vhost configuration file to the enabled sites
-sudo ln -s ../sites-available/codebender-$PACKAGENAME 00-codebender
+sudo a2ensite codebender-$PACKAGENAME
 # Reload apache in order to enable the new configurations
 sudo service apache2 reload