fix lint issues

src/main/res/layout/log_send_file.xml

@@ -28,7 +28,7 @@
     <ScrollView
         android:id="@+id/scrollView1"
         android:layout_width="match_parent"
-        android:layout_height="@dimen/zero"
+        android:layout_height="0dp"
         android:layout_marginBottom="@dimen/standard_margin"
         android:layout_weight="1">
 

src/main/res/layout/toolbar_preview.xml

@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Nextcloud Android client application
-
-  Copyright (C) 2018 Andy Scherzinger
-
-  This program is free software; you can redistribute it and/or
-  modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
-  License as published by the Free Software Foundation; either
-  version 3 of the License, or any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-  GNU AFFERO GENERAL PUBLIC LICENSE for more details.
-
-  You should have received a copy of the GNU Affero General Public
-  License along with this program.  If not, see <http://www.gnu.org/licenses/>.
--->
-<android.support.design.widget.AppBarLayout
-    android:id="@+id/appbar"
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
-
-    <android.support.v7.widget.Toolbar
-        android:id="@+id/toolbar"
-        android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:background="?attr/colorPrimary"
-        app:layout_scrollFlags="scroll|enterAlways|snap"
-        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
-
-    <ImageView
-        android:id="@+id/preview_image"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
-
-    <ProgressBar
-        android:id="@+id/progressBar"
-        style="@style/Widget.ownCloud.TopProgressBar"
-        android:layout_width="match_parent"
-        android:layout_height="@dimen/standard_quarter_margin"
-        android:layout_margin="@dimen/zero"
-        android:indeterminate="false"
-        android:indeterminateOnly="false"
-        android:padding="@dimen/zero"
-        android:visibility="visible"
-        />
-
-</android.support.design.widget.AppBarLayout>

src/main/res/values/dims.xml

@@ -107,7 +107,6 @@
     <dimen name="file_details_user_icon_layout_width">32dp</dimen>
     <dimen name="file_details_user_icon_layout_height">32dp</dimen>
     <dimen name="file_details_username_text_size">16sp</dimen>
-    <dimen name="file_details_username_layout_text_margin">12dp</dimen>
     <dimen name="grid_image_shared_icon_layout_top_margin">24dp</dimen>
     <dimen name="grid_image_local_file_indicator_layout_width">16dp</dimen>
     <dimen name="grid_image_local_file_indicator_layout_height">16dp</dimen>

src/main/res/values/strings.xml

@@ -269,7 +269,6 @@
     <string name="unfavorite">Unset as available offline</string>
     <string name="favorite_real">Set as favorite</string>
     <string name="unset_favorite_real">Unset favorite</string>
-    <string name="favorite_switch">Available offline</string>
     <string name="encrypted">Set as encrypted</string>
     <string name="unset_encrypted">Unset encryption</string>
     <string name="common_rename">Rename</string>