Make notification channel names less technical

Signed-off-by: AJ Jordan <alex@strugee.net>

src/main/java/com/owncloud/android/MainApp.java

@@ -485,11 +485,11 @@ public class MainApp extends MultiDexApplication implements HasAndroidInjector {
 
             if (notificationManager != null) {
                 createChannel(notificationManager, NotificationUtils.NOTIFICATION_CHANNEL_DOWNLOAD,
-                              R.string.notification_channel_download_name,
+                              R.string.notification_channel_download_name_short,
                               R.string.notification_channel_download_description, context);
 
                 createChannel(notificationManager, NotificationUtils.NOTIFICATION_CHANNEL_UPLOAD,
-                              R.string.notification_channel_upload_name,
+                              R.string.notification_channel_upload_name_short,
                               R.string.notification_channel_upload_description, context);
 
                 createChannel(notificationManager, NotificationUtils.NOTIFICATION_CHANNEL_MEDIA,

src/main/res/values/strings.xml

@@ -660,8 +660,8 @@
     <string name="share">Share</string>
     <string name="link">Link</string>
 
-    <string name="notification_channel_upload_name">Upload notification channel</string>
-    <string name="notification_channel_download_name">Download notification channel</string>
+    <string name="notification_channel_upload_name_short">Uploads</string>
+    <string name="notification_channel_download_name_short">Downloads</string>
     <string name="notification_channel_download_description">Shows download progress</string>
     <string name="notification_channel_upload_description">Shows upload progress</string>
     <string name="notification_channel_media_name">Media player</string>