Import InternAloha internships into RadGrad.

[cammoore]

Please do work for this task in a branch called issue-752.

We need a mechanism to import InternAloha internships into RadGrad. This will have several steps.

• [x] Get the canonical internships from InternAloha
• [x] Process each internship adding InterestKeywords to the internship. This will start with a very simple method that we can improve over time.
• [x] Given the keywords apply the interests to the internship.
• [x] Consolidate the internships matching duplicates from different sources.
• [x] Validate the new RadGrad Internship
• [x] Add the RadGrad internship to the collection.
• [x] Develop a pruning mechanism for removing old/expired internships. This might be a separate issue.

[cammoore]

Have a spike solution.

Don't have the clean-up implemented. Going to do this in another issue.