Update studio (#572)

* gradle 5.1

* remove ref to @id/ibBookmark

app/src/main/res/layout/fragment_login.xml

@@ -37,8 +37,7 @@
                 android:layout_height="wrap_content"
                 android:layout_alignParentTop="true"
                 android:layout_marginStart="16dp"
-                android:layout_toStartOf="@+id/ibOption"
-                android:layout_toEndOf="@id/ibBookmark">
+                android:layout_toStartOf="@+id/ibOption">
 
                 <ProgressBar
                     android:id="@+id/pbNode"

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.2'
+        classpath 'com.android.tools.build:gradle:3.4.0'
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Jan 21 16:37:55 CET 2019
+#Fri Apr 19 14:59:36 CEST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip