update gradle and fix load image error string

app/src/main/java/org/schabi/newpipe/ErrorActivity.java

@@ -345,6 +345,8 @@ public class ErrorActivity extends AppCompatActivity {
                 return SOMETHING_ELSE_STRING;
             case USER_REPORT:
                 return USER_REPORT_STRING;
+            case LOAD_IMAGE:
+                return LOAD_IMAGE_STRING;
             default:
                 return "Your description is in another castle.";
         }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.1.3'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Aug 10 20:55:41 CEST 2015
+#Sat Aug 20 00:40:54 CEST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip