IntelliJ not resolving Play's build.sbt libraryDependencies

Question

I am new to IntelliJ IDE and I am trying to use it for a new Play project I am working on. I have added some libraries to the libraryDependencies in build.sbt but IntelliJ cannot seem to resolve them as External Libraries

libraryDependencies ++= Seq(
  jdbc,
  anorm,
  cache,
  "org.reactivemongo" %% "play2-reactivemongo" % "0.10.2",
  "org.webjars" % "angularjs" % "1.2.13",
  "org.webjars" % "foundation" % "5.1.1"
) 

I am using the Play 2.0 Plugin for IntelliJ Ultimate and I also have the sbt and Scala plugins installed.

When I run the play run command from the command line everything compiles and works fine, but it is annoying seeing all the errors in the IDE:

Answer 1

Run additionally

play idea

or

play "idea with-sources=yes"

And reload project when IntelliJ will ask for that