add property fileExtensions. Null check cmdlinearg attribute in List()
move logic out of Program.cs. into new classes. Listener improvements.
remove dev hardcode testing values
Fix of GetTempFileName Problem

The original code creates everytime a new temp file, which is not deleted. There is an limit of 65536 temp files. After this count the GetTempFileName function throws an IOException.
Merge branch 'hmatiske-master'
Merge branch 'master' of github.com:philoushka/AzureJobs into philoushka-master
Merge branch 'philoushka-master'