Add student_key model.
Merge branch 'master' of https://github.com/isenseDev/rSENSE into student-keys
Actually add student_keys model.
Add student keys.
Manual Entry, File Upload for user with key.
Student key upload data test.
Merge branch 'master' of https://github.com/isenseDev/rSENSE into student-keys

Conflicts:
	test/integration/upload_data_test.rb
Rename Student Keys to Contrib Keys.
First/Last -> Name, Require Email, Depricate Username
looking at the formating of my other error messages to be consistant
Semi working
Removing a large chunk of logic from edit table upload
Likes should be destroyed with a user.

Addresses #1175
Merge pull request #1183 from jdalphon/jd_issue1175

Delete likes with users
manual entry now fails gracefully if it cant save your data set
-Changed hint for email to note that it will be required in the near future.
Merge pull request #1186 from mmcguinn/scratch

Copy Edit
Use a version of yaml_db that supports Rails 4.
Fix for news page
- Even though guides.rubyonrails.org clearly states that LAST(LIMIT) returns in descending order, it doesnt.
- Changed the page a bit to look better for admins.
Merge pull request #1190 from jdalphon/fix_news_page

Fix for news page