Shelf Panel: Expand/Collapse actions
Shelf Panel: Expand/Collapse actions

Merge pull request #1421 (https://github.com/JetBrains/intellij-community/pull/1421)

GitOrigin-RevId: 8d3057c2a16e425fbf8a2e23a8a8336782416110
allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community