[zanata/zanata-platform] 5acee1: Revert "Update Kotlin to 1.2.21" (#728)

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zanata/zanata-platform
  Commit: 5acee19fa70fd94a570626f58163e4e78792c46b
      https://github.com/zanata/zanata-platform/commit/5acee19fa70fd94a570626f58163e4e78792c46b
  Author: Sean Flanigan <sflaniga at redhat.com>
  Date:   2018-02-20 (Tue, 20 Feb 2018)

  Changed paths:
    M server/pom.xml

  Log Message:
  -----------
  Revert "Update Kotlin to 1.2.21" (#728)

This reverts commit f8ef325c83855e569ff3bea1954e976e2d6958e1.