Added api as a dependency to other non-common modules

Plan/bukkit/build.gradle

@@ -1,6 +1,7 @@
 dependencies {
     compile project(path: ":common", configuration: 'shadow')
-    
+    compileOnly project(":api")
+
     compile "com.djrapitops:AbstractPluginFramework-bukkit:$abstractPluginFrameworkVersion"
     compile "org.bstats:bstats-bukkit:$bstatsVersion"
 

Plan/bungeecord/build.gradle

@@ -1,5 +1,6 @@
 dependencies {
     compile project(path: ":common", configuration: 'shadow')
+    compileOnly project(":api")
 
     compile "com.djrapitops:AbstractPluginFramework-bungeecord:$abstractPluginFrameworkVersion"
     compile "org.bstats:bstats-bungeecord:$bstatsVersion"

Plan/sponge/build.gradle

@@ -1,6 +1,7 @@
 dependencies {
     compile project(path: ":common", configuration: 'shadow')
-    
+    compileOnly project(":api")
+
     compile "com.djrapitops:AbstractPluginFramework-sponge:$abstractPluginFrameworkVersion"
     compile "org.bstats:bstats-sponge:$bstatsVersion"
 

Plan/velocity/build.gradle

@@ -1,5 +1,7 @@
 dependencies {
     compile project(path: ":common", configuration: 'shadow')
+    compileOnly project(":api")
+
     compile "com.djrapitops:AbstractPluginFramework-velocity:$abstractPluginFrameworkVersion"
 
     compileOnly "com.velocitypowered:velocity-api:$velocityVersion"