Revert "Updated material"

This reverts commit 0b8655f9a1.

app/build.gradle

@@ -32,11 +32,6 @@ android {
         }
     }
 
-    compileOptions {
-        sourceCompatibility 1.8
-        targetCompatibility 1.8
-    }
-
     signingConfigs {
         release {
             storeFile file(keystoreProperties['storeFile'])
@@ -135,7 +130,7 @@ dependencies {
     def recyclerview_version = "1.1.0-beta01"
     def coordinatorlayout_version = "1.1.0-beta01"
     def constraintlayout_version = "2.0.0-beta2"
-    def material_version = "1.1.0-alpha08"
+    def material_version = "1.1.0-alpha07"
     def browser_version = "1.0.0"
     def lifecycle_version = "2.1.0-rc01"
     def room_version = "2.1.0"