exporer / manage / administration - does not show variable list for completed process

[glazachev]

where:
* http://host/activiti-explorer/admin_management/
* Completed process instances -> Process definitions of completed instances -> Process instances -> Variables

what:
* there is the variables in act_hi_varinst table, but it does not show in Variables table
* It seems, logic gets variables from runtime tables (as for running process instances)

[trademak]

For completed process instances that can't be the case. If you experience this than please create a JIRA.