intellij-community project configuration: set minimum required IDE version for IDEA project to 2018.3
intellij-community project configuration: set minimum required IDE version for IDEA project to 2018.3

Following similar change (9ff9493af5b) in idea-ultimate project.

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