Your version of Kotlin runtime in 'Maven: org.jetbrains.kotlin:kotlin-stdlib:1.1.4' library is 1.1.4, while plugin version is 1.1.4-release-IJ2017.2-2.
This is with
1.1.4 makes no difference.
A quick search shows that this issue tends to repeat itself: https://stackoverflow.com/questions/43928118/outdated-kotlin-runtime-warning-kotlin-plugin-1-1-2-release-studio2-3-3
What can I do to resolve it and prevent it from happening in the future?