Added notification for repo-update-gpg-key
Added required locators and a function to update repositories
Added provider key for Repsoitory
Modified the update function and the nav/Destination sections
updated the :repo-name to required :name under named-page
Merge branch 'master' into records-finale

Conflicts:
	src/katello.clj
removed a locator: select-repository
Merge pull request #604 from kbidarkar/records-finale

[DONE]Added Update Repositories function