Update project files

app/build.gradle

@@ -1,40 +1,35 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion "26.0.1"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
         applicationId "org.traccar.manager"
         minSdkVersion 19
-        targetSdkVersion 26
-        versionCode 14
-        versionName "2.4"
+        targetSdkVersion 27
+        versionCode 15
+        versionName "2.5"
     }
 
+    flavorDimensions "default"
     productFlavors {
         regular
         google
     }
-
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt')
-        }
-    }
 }
 
 dependencies {
-    compile 'com.android.support:design:26.0.1'
+    compile 'com.android.support:design:27.1.0'
     testCompile 'junit:junit:4.12'
-    testCompile 'org.robolectric:robolectric:3.0'
-    googleCompile 'com.google.firebase:firebase-core:11.2.0'
-    googleCompile 'com.google.firebase:firebase-crash:11.2.0'
+    testCompile 'org.robolectric:robolectric:3.6.1'
+    googleCompile 'com.google.firebase:firebase-core:11.8.0'
+    googleCompile 'com.crashlytics.sdk.android:crashlytics:2.9.1'
 }
 
 if (getGradle().getStartParameter().getTaskRequests().toString().contains("Google")) {
     apply plugin: 'com.google.gms.google-services'
+    apply plugin: 'io.fabric'
 
     task copyJson(type: Copy) {
         from '../../traccar-shared/google-services'