This commit adds a new component to be used for showing CodeMirror
instances, along with an expandable capability to view more variables.
It also removes the previous directive for the Network UI that used
to include this functionality.
* The non-refactored credentials code has been returned to its
original location. Inventories and Jobs pull in Credentials
based on its original location in the file structure.
* Apply margin to individual inputs instead of panels to have
consistent spacing at more narrow resolutions.
* Add placeholder for a Lookup component which will be necessary
to let users select an org for the credential.
