Replace OptionalConfigurable with ConfigurableProvider
IDEA-134521 "View as" debugger functionality does not work for 'this' object
fix PY-1509 Debug variable inspection pane/tree does not support MultiValueDict
Merge branch origin/master
make one size for welcome screen
JBAutoscroller: add MoveTableCellEditorOnAutoscrollFix (moved from GridScrollPane)
JBAutoscroller: fix autoscroll on selection change in JTables
Update debug logging for ConfigurableWrapper
EditorTextFieldCellRenderer: implement createRangeMarker to accommodate changes in CaretImpl