dependecy error after adding the new facebook lib in gradle

Question

After I added compile 'com.facebook.android:facebook-android-sdk:3.21.1' in the dependences of my project I start getting this error when i try to build and run the application(pressing the play button in android studios): Output:

Error:Execution failed for task ':dexDebug'.
......
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompatIcs;
    at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594)
    at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552)
    at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533)
    at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170)
    at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
    at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
    at com.android.dx.command.dexer.Main.run(Main.java:230)
    at com.android.dx.command.dexer.Main.main(Main.java:199)
    at com.android.dx.command.Main.main(Main.java:103)

Here is my complete gradle build file:

buildscript {
    repositories {
        mavenCentral()
        maven { url 'http://repo1.maven.org/maven2' }
        maven { url 'http://download.crashlytics.com/maven' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
        classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.+'

    }
}
apply plugin: "eclipse"
apply plugin: 'com.android.application'
apply plugin: 'crashlytics'
repositories {
    mavenCentral()
    maven { url 'http://repo1.maven.org/maven2' }
    maven { url 'http://download.crashlytics.com/maven' }
}
android {

    compileSdkVersion 19
    buildToolsVersion "19.1.0"

    dependencies {
        compile fileTree(dir: 'libs', include: '*.jar')
        compile project(":libraries:dialog-manager-lib")
        compile project(":libraries:google-play-services-lib")
        compile project(":libraries:pager-indicator-lib")
        compile project(":libraries:apphance-library-1.9.11")
        compile 'com.crashlytics.android:crashlytics:1.+'
    }

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
//        multiDexEnabled true
        testInstrumentationRunner "android.test.InstrumentationTestRunner"
    }

    signingConfigs {
        release {
            storeFile file(RELEASE_KEYSTORE_FILE)
            storePassword System.getenv("PASSWORD_KEYSTORE_JB")
            keyAlias System.getenv("ALIAS_KEYSTORE_JB")
            keyPassword System.getenv("PASSWORD_KEYSTORE_JB")
        }

        debug {
            storeFile file(DEBUG_KEYSTORE_FILE_LOCAL)
        }

        beta {
            storeFile file(DEBUG_KEYSTORE_FILE_LOCAL)
        }

    }

    buildTypes {
        debug {
            debuggable true
            signingConfig android.signingConfigs.debug
            applicationIdSuffix ".debug"
        }
        release {
            signingConfig signingConfigs.release
        }

        beta {
            debuggable true
            signingConfig android.signingConfigs.debug
            applicationIdSuffix ".beta"
        }
    }

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        release {
            res.srcDirs = ['res_release']
        }

        beta {
            res.srcDirs = ['res_beta']
        }

        instrumentTest.setRoot('test')
        instrumentTest {
            java.srcDirs = ['test']
        }
    }

    lintOptions {
        abortOnError false
    }
}
task wrapper(type: Wrapper) {
    gradleVersion = '1.11'
}
dependencies {
    compile 'com.mixpanel.android:mixpanel-android:4.5.2'
    compile 'com.facebook.android:facebook-android-sdk:3.21.1'
//    compile 'com.android.support:multidex:1.0.0'
}
//allprojects {
//    repositories {
//        jcenter()
//    }
//    configurations.all((Closure) {
//        resolutionStrategy {
//            force 'com.android.support:support-v4:21.0.3' // your version of support library
//        }
//    })
//
//} 

Before I have used the facebook library by downloading it localy and referenceing it in the andeoid.dependeces section in the gradle document and this has worked just great. Any suggestions on how to fix the problem. here is also the dependency tree:

 _betaCompile - ## Internal use, do not manually configure ##
+--- project :libraries:dialog-manager-lib
|    \--- com.android.support:support-v4:21.0.3
|         \--- com.android.support:support-annotations:21.0.3
+--- project :libraries:google-play-services-lib
+--- project :libraries:pager-indicator-lib
|    \--- com.android.support:support-v4:21.0.3 (*)
+--- project :libraries:apphance-library-1.9.11
|    \--- com.android.support:support-v4:21.0.3 (*)
+--- com.crashlytics.android:crashlytics:1.+ -> 1.1.13
+--- com.mixpanel.android:mixpanel-android:4.5.2
+--- com.facebook.android:facebook-android-sdk:3.21.1
|    +--- com.parse.bolts:bolts-android:1.1.2
|    \--- com.android.support:support-v4:[20,21) -> 21.0.3 (*)
\--- com.android.support:multidex:1.0.0

Thanks.