Move the JavaFX files written in Kotlin to the FX module.

build.gradle

@@ -5,5 +5,9 @@ subprojects {
     repositories {
       mavenCentral()
     }
+
+    dependencies {
+        compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:1.1.3"
+    }
 }
 

core/build.gradle

@@ -4,6 +4,5 @@ plugins {
 
 dependencies {
     compile 'com.moandjiezana.toml:toml4j:0.7.1'
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:1.1.3"
     testCompile 'junit:junit:4.12'
 }

fx/build.gradle

@@ -1,3 +1,6 @@
+plugins {
+  id 'org.jetbrains.kotlin.jvm' version '1.1.3'
+}
 apply plugin: 'application'
 
 dependencies {