Bug 115426

I propose to introduce general specification of behavior for features which show their results somehow in top component
containers (Find Usages, Find..., C++ Includes Hierarchy, C++ Class Hierarchy, ...)

There is always a problem, that Find Usages has too many opened tabs with old unused results, and opposite Find...
functionality doesn't allow to have more than one tab.
Having a lot of tabs is waisting space in window, but some features (like Find Usages) really need to remember a few
prev. results for easier navigation/code analysis.
When tab container has only one tab, this tab is not displayed and doesn't spend space => it looks like general window.
So, features in their "Query parameters" dialogs should have checkbox "reuse eldest tab" which allow to reuse tabs or
add few new ones when history is important. In this case user can use only, say, 3 Find Usages tab, 2 Search Results
tabs and save window space without loosing historically important queries.