Merge pull request #142 from asascience-open/milestone_1_issues

Milestone 1 issues
Merge pull request #143 from asascience-open/milestone_1_issues

Omit optional sections if not specified
Merge pull request #149 from asascience-open/milestone_1_issues

Milestone 1 issues
Merge pull request #150 from asascience-open/milestone_1_issues

Exception Handling
Removed sos-servlet.xml as it is no longer needed per #81