Add outputs

[lithorus]

Link the Issue(s) this Pull Request is related to.
#732

Summarize your change.

• Added output element to new xml spec
• Used output elements to populate database
• Fetch outputs from database and add to job spec

[lithorus]

Btw. one thing I noticed was that when adding outputs in the API, you specify name and path of the output, however on the server side (registerLayerOutput()) it doesn't really have the functionaility of keeping the name, only the path.
Should I look at implementing this?

[DiegoTavares]

Btw. one thing I noticed was that when adding outputs in the API, you specify name and path of the output, however on the server side (registerLayerOutput()) it doesn't really have the functionaility of keeping the name, only the path. Should I look at implementing this?

Interesting, I haven't noticed that. It can either be integrated under this PR or you can create a new one if you want.

[lithorus]

Probably best in another PR. Atleast it shouldn't need updates to the spec and the current implementation solves the need for the issue linked in here.