eliminate unused imports warnings from eclipse
don't offer to expand objects with no contents
Merge branch 'feature/environment-scaffold' of github.com:rstudio/rstudio into feature/environment-scaffold
code review feedback: move and reformat code as appropriate
Merge branch 'feature/environment-scaffold' of github.com:rstudio/rstudio into feature/environment-scaffold
click-to-invoke for names as well as values; friendly display of unloaded data
don't jump unto debug mode unless there's an interactive browser on the context stack
Merge branch 'feature/environment-scaffold' into feature/callstack

Conflicts:
	src/cpp/session/modules/environment/EnvironmentMonitor.cpp
	src/cpp/session/modules/environment/SessionEnvironment.cpp