Fix build error (#1099)

* Prevent build errors by downgrading Fabric and updating vector drawable files

* Update Gradle to 4.10 to fix Fabric problems with earlier versions

See more: https://stackoverflow.com/a/52503456

app/src/main/res/drawable/meal_alcohol.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector android:height="24dp"
         android:viewportHeight="56.0"
         android:viewportWidth="56.0"

app/src/main/res/drawable/meal_beef.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector android:height="24dp"
         android:viewportHeight="475.696"
         android:viewportWidth="475.695"

app/src/main/res/drawable/meal_pork.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector android:height="24dp"
         android:viewportHeight="407.018"
         android:viewportWidth="407.018"

app/src/main/res/drawable/meal_vegan.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector android:height="24dp"
         android:viewportHeight="44.019"
         android:viewportWidth="44.019"

app/src/main/res/drawable/meal_veggie.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <vector android:height="24dp"
         android:viewportHeight="56.538"
         android:viewportWidth="56.538"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Sep 24 21:32:07 CEST 2018
+#Wed Sep 26 09:02:03 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip