[GSoC] Update Dialog and Fix failing tests (commons-app#4564)

* Update Dialog and Fix failing tests

* Dialog Fix

Author: 4D17Y4

app/src/main/res/values/strings.xml

@@ -646,7 +646,7 @@ Upload your first media by tapping on the add button.</string>
   <string name="back">Back</string>
   <string name="welcome_custom_picture_selector_text">Welcome to Custom Picture Selector</string>
   <string name="custom_selector_info_text1">This picker shows differently pictures that are already to Commons.</string>
-  <string name="custom_selector_info_text2">Unlike the picture on the left, the picture on the right has the Commons logo indicating it is already uploaded.</string>
+  <string name="custom_selector_info_text2">Unlike the picture on the left, the picture on the right has the Commons logo indicating it is already uploaded. \n Touch and hold for image preview.</string>
   <string name="welcome_custom_selector_ok">Awesome</string>
   <string name="custom_selector_already_uploaded_image_text">This image has already been uploaded to Commons.</string>
   <string name="place_state_wlm">WLM</string>

app/src/test/kotlin/fr/free/nrw/commons/contributions/ContributionsListFragmentUnitTests.kt

@@ -87,6 +87,9 @@ class ContributionsListFragmentUnitTests {
     @Mock
     private lateinit var fabGallery: FloatingActionButton
 
+    @Mock
+    private lateinit var fabCustomGallery: FloatingActionButton
+
     @Mock
     private lateinit var newConfig: Configuration
 
@@ -119,6 +122,7 @@ class ContributionsListFragmentUnitTests {
         Whitebox.setInternalState(fragment, "fabPlus", fabPlus)
         Whitebox.setInternalState(fragment, "fabCamera", fabCamera)
         Whitebox.setInternalState(fragment, "fabGallery", fabGallery)
+        Whitebox.setInternalState(fragment, "fabCustomGallery", fabCustomGallery)
         Whitebox.setInternalState(fragment, "fab_layout", fabLayout)
         Whitebox.setInternalState(
             fragment,