[GSoC 2022] Improve custom picker (all features) (#5035)

* Project Initiated by creating helper classes for database operations

* Database created

* Rest of the work and documentation

* Requested changes done

* Localisation updates from https://translatewiki.net.

* Localisation updates from https://translatewiki.net.

* Localisation updates from https://translatewiki.net.

* [GSoC] Insert and Remove Images from not for upload (#4999)

* Inserted and marked images as not for upload

* Documentation added

* Test delete

* Implemented remove from not for upload

* Test fixed

* Requested changes done

* Added tests for new lines in existing classes

* [GSoC] Added Bubble Scroll (#5023)

* Library added

* Bubble scroll implemented

* Left and right swipe

* Requested changes

* [GSoC] Hide/Unhide actioned pictures and change numbering (#5012)

* Changed numbering of marked images

* Hide Unhide implemented

* Test fixed

* Improved speed for database operation

* Improved speed for database operation

* Changed progress dialog

* Improved hiding speed

* Test fixed

* Fixed bug

* Fixed bug and improved performance

* Fixed bug and improved performance

* Test fixed

* Bug fixed

* Bug fixed

* Bug fixed

* Bug fixed

* Bug fixed

* Code clean up

* Test hiding images

* Test hiding images

* Test hiding images

* Code clean up and test fixed

* Fixed layout

* Fixed bug

* Bug fixed

* Renamed method

* Documentation added explaining logic

* Documentation added explaining logic

* [GSoC] Full Screen Mode (#5032)

* Gesture detection implemented

* Left and right swipe

* Selection implemented

* onDown implemented

* onDown implemented

* FS mode implemented

* OnSwipe doc

* Scope cancel

* Added label in Manifest

* Merged two features

* Requested changes

* Image uploaded bug fixed

* Increased DB version

* Made requested changes

* Made requested changes

* Made requested changes

* Made requested changes

* Solved image flashing bug

* Solved image flashing bug

* Requested changes

* Requested changes

* Changed name of a function

* Fixed transaction failure on large number of images

* Tested with isIdentity

* Tested with isIdentity

* Increased the threshold

* Added info dialog

* Minor changes

* ImageAdapter Test

* CustomSelectorActivity Test

* Requested changes

* Test for ZoomableActivity

* Test for ZoomableActivity

* Test for ImageLoader

* Test for OnSwipeTouchListener

* Test for rest

* Reverted some test changes

* Added more tests for ImageAdapter

* Added more tests for ImageAdapter and swipe gesture

Co-authored-by: translatewiki.net <l10n-bot@translatewiki.net>

app/build.gradle

@@ -122,6 +122,7 @@ dependencies {
     implementation "androidx.exifinterface:exifinterface:1.3.2"
     implementation "androidx.core:core-ktx:$CORE_KTX_VERSION"
     implementation "androidx.multidex:multidex:2.0.1"
+    compile 'com.simplecityapps:recyclerview-fastscroll:2.0.1'
 
     //swipe_layout
     implementation 'com.daimajia.swipelayout:library:1.2.0@aar'