Adding some more checks in installApache2():
Adding some more checks in installApache2():

 (1) check if Apache2 is running
 (2) check if Apache2 is running using IPv6

lpalgarvio/Open-Semantic-Framework-Installer,structureddynamics/Open-Semantic-Framework-Installer,neuroidss/Open-Semantic-Framework-Installer,lpalgarvio/Open-Semantic-Framework-Installer,structureddynamics/Open-Semantic-Framework-Installer,neuroidss/Open-Semantic-Framework-Installer