Include previous Wikimedia hackathon (2018) task, peer review, to codebase (#2602)

* Add new activity to manifest

* Create review activity layout base

* Add a new menu item to drawer for peer review

* Add a top menu with randomizer icon to review activity

* Add strings for review button

* Add activity to ActivityBuilderModule for injection

* Add a new drawer item to start review acitivty

* Create base of the Review Activity

* Add fragment pager

* Add new fragment for injection

* Create a fragment pager layout

* Wikimedia hackathon 2018 (#1533)

* First draft of fn to get random recent image

* Use log entries for requests to beta, try to connect refresh button

FIXME: runs http request on main thread, breaks

* Tweak button connection

* Add ReviewController class

* Fix fragments

* Wmhack2018 (#1534)

* tiny fixes

* Load pictures into activities

* Re-use same class for all review fragments (#1537)

And try to add pager indicator

* [WIP] category check

* [WIP] add on-click actions to ReviewActivity

* [WIP] add SendThankTask

* Make it beautiful

* Add some category stuff back in to review (#1538)

* Use standalone category extraction code in MediaDataExtractor

* Add categories to category review page

* Change category question text sizes

* Call randomizer whenever the activity is ready

* Add progressbar

* [WIP] add DeleteTask.askReasonAndExecute

* Fix refresh button string

* Typo: "nominate *for* deletion"

* Add formatting to categories and put them in the same textView

* Pass context and adapters as parameters to controller

* Add actions to controller

* Make everyting work

* Add another fragment to thank

* Fix npe

* Add missing execute method

* Some codes

* Add a funy text

* More random recent image selection (#1542)

time-based randomness is biased - if someone uploaded 100 images in
hour, one week ago, and I select a random point in time, their last
image is way more likely to come up than anything else.

With this, there is still bias towards choosing one of the last N
in any burst of uploads (where N is the number of recent changes
fetched) but it's a bit better than before.

* Create Revision class

* Add meaningluf strings

* Error handling for review image/category fetch (#1543)

* Add information layout for username and filename

* Use Single to get firstRevision

* try to add username and filename

* Ensure caption is shown on every review fragment

* Fix build

* Fixes missing import

* Change button text,show current category, add skip image button

* Modify texts, fix night mode issues

* Positive Wording

* fix landscape issue

* Add checkbox popup,rewording

* Spelling Correction

* Fix merge

* Remove commented out code, use lambda

* Simplify toolbar include

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

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/drawer_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:id="@+id/coordinator_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <include layout="@layout/toolbar"/>
+
+            <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_below="@id/toolbar"
+                android:orientation="vertical"
+                android:weightSum="15">
+
+                <Button
+                    android:id="@+id/skip_image"
+                    android:layout_width="match_parent"
+                    android:layout_height="0dp"
+                    android:text="SKIP THIS IMAGE"
+                    android:textColor="@color/button_blue_dark"
+                    android:background="@android:color/transparent"
+                    android:layout_weight="1"
+                    android:textStyle="bold"/>
+
+
+                <fr.free.nrw.commons.review.ReviewViewPager
+                    android:id="@+id/reviewPager"
+                    android:layout_width="match_parent"
+                    android:layout_height="0dp"
+                    android:fadingEdge="none"
+                    android:layout_weight="13.5"/>
+
+
+                <com.viewpagerindicator.CirclePageIndicator
+                    android:id="@+id/reviewPagerIndicator"
+                    android:layout_height="0dp"
+                    android:layout_width="match_parent"
+                    android:layout_gravity="center"
+                    android:foregroundGravity="center_vertical"
+                    android:elevation="1dp"
+                    android:background="?attr/colorPrimaryDark"
+                    android:layout_weight="0.5"
+                />
+
+            </LinearLayout>
+
+        </RelativeLayout>
+
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+    <include layout="@layout/drawer_view" />
+
+</androidx.drawerlayout.widget.DrawerLayout>