changed icode to instutioncode

Changed html display in detailrow and detail to display institutioncode instead of icode.  Search and data submit will still use functionality of icode.  Resolves issue identified in #423.  Tucos comment on #423 more directly applies to #361.

This fix does not resolve issue identified in #361. #361 would only be resolved to change the icode data in cartodb resource_staging for insitutions with a non-standard institutionCode for certain collections.  This fix however does not require a code change.  

Display alone may satisfy Carla's reported issue.  If so we could remove issue #361.  If not and being able to search for MVZObs as described in #361, then we'll need to modify the data in cartodb.