Update fragment_input_hostname.xml and .travis.yml file

.travis.yml

@@ -8,6 +8,8 @@ before_script:
  - echo y | android update sdk --no-ui --all --filter extra-android-m2repository,extra-android-support
  - echo y | android update sdk --no-ui --all --filter extra-google-m2repository,extra-google-google_play_services
  - echo y | android update sdk --no-ui --all --filter build-tools-25.0.3
+ - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout;1.0.2"
+ - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout-solver;1.0.2"
  - ./gradlew dependencies
 
 script:

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

@@ -13,7 +13,7 @@
     android:layout_width="wrap_content"
     android:minWidth="288dp"
     android:layout_height="wrap_content"
-    android:padding="@dimen/margin_16"
+    android:padding="@dimen/margin_24"
     android:background="@drawable/container_bg"
     app:layout_constraintTop_toTopOf="parent"
     app:layout_constraintBottom_toTopOf="@+id/version_info"
@@ -34,7 +34,7 @@
 
     <EditText
       android:id="@+id/editor_hostname"
-      android:layout_width="wrap_content"
+      android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:hint="@string/fragment_input_hostname_server_hint"
       android:imeOptions="actionSend"