Changes name of product flavors

app/build.gradle

@@ -18,9 +18,9 @@ android {
     }
 
     productFlavors {
-        free {
+        fdroid {
         }
-        proprietary {
+        safetynet {
             versionName "1.4.7-s"
         }
     }
@@ -42,5 +42,5 @@ dependencies {
     compile 'com.github.chrisbanes:PhotoView:2.0.0'
     compile 'com.google.code.gson:gson:2.8.0'
     compile 'org.jsoup:jsoup:1.10.3'
-    proprietaryCompile 'com.google.android.gms:play-services-safetynet:11.0.4'
+    safetynetCompile 'com.google.android.gms:play-services-safetynet:11.0.4'
 }