fix regression after b517d180

Vitaly Provodin

``copyFromLegacy()`` copies data from old configuration to new one. It uses ``PsiDocumentManager`` so it needs to post tasks to EDT using invoke-n-wait.
Since this method is called from ``readExternal()`` it is accessed from F/J thread under read action that clones template configuration to check if gutter has to be displayed.
Calling invokeAndWait under read action causes dead lock.
We now convert old template configurations to new one using project event that takes place on EDT as we do for regular configurations and explicitly check coping process takes places on EDT.

This case is rare since no one really needs to have script or file set in default configuration (and working directory does not need ``PsiDocumentManager``)

RunConfigurationsContextProvider / PostSyncProjectSetup — do not require RunManager instance (should be lazy)

lazy RunManager to fix RUBY-19527 (module is not available because modules are loaded only after project initialization)

The ancestor is used to update icon's JBUI.scale to honor per-monitor DPI