Project attribute from WebJobs.xml as a Job name

This change allows me to change the Job name shown in the Azure portal by changing the WebJobs.xml file. 

Because my project name has dots in it, I wasn't able to create a 'dummy' Job in the Azure portal to add a schedule (the portal doesn't allow dots in the job's name). Because of this change I can now use dots in the project name, while having a different job name without dots.