update Kotlin plugin to 1.2.21-release-IJ2018.1-1
update Kotlin plugin to 1.2.21-release-IJ2018.1-1

xfournet/intellij-community,allotria/intellij-community,allotria/intellij-community,xfournet/intellij-community,allotria/intellij-community,xfournet/intellij-community,allotria/intellij-community,allotria/intellij-community,xfournet/intellij-community,allotria/intellij-community,allotria/intellij-community,xfournet/intellij-community,xfournet/intellij-community,allotria/intellij-community,xfournet/intellij-community,xfournet/intellij-community,xfournet/intellij-community,xfournet/intellij-community,allotria/intellij-community,allotria/intellij-community,xfournet/intellij-community,xfournet/intellij-community,allotria/intellij-community,allotria/intellij-community,xfournet/intellij-community,allotria/intellij-community