Merge 2.9 release with master (#2174)

* Fix memory leak due to wikidata edit listener (#2048)

* Fix bookmark crash fix (#2047)

* Fix bookmark crash fix

* Fix check for bookmark creator

* Bug fix #2042 (#2056)

* Bug fix #2042
* Added a snack with retry when api in AA fails
* Increased connection timeouts in okhttpclient builder

* added missing string resource

* Bugfix/duplicate categories (#2080)

* Increased timeout to 60 seconds

* Bug fix #1550
* filter duplicate categories

* Fix crash because of inactive fragment UI (#2046)

* Fix crash because of inactive fragment UI

* Add java docs

* Add information icon action Fiixes #2055 2.9.0: the 'i' icon in nearby doesn't do anything (#2057)

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

* Remove unused mediawiki api dependency (#1991)

* Categories with pipe suffix (#1873)

* Bug fix issue #1826
Changes made :
-Certain category names used to show suffixed with strings prefixed with pipe '|'. Removed everything after the pipe. As per the discussion on the thread, its safe to remove everything after the pipe, including the pipe

* review suggested changes
*Code formatting
*Extracted out the index of pipe in a variable
*Added issue link in comments

* Remove libraries section from README (#1988)

* Remove libraries section from README

* Add wiki link to "libraries used" to README

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

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

* Use alert dialog instead of popup window, for nearby information

* Revert irrelevant changes, sorry

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

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:background="?attr/mainTabBackground"
-    >
-
-    <TextView
-        android:id="@+id/info_text"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginVertical="16dp"
-        android:layout_marginHorizontal="8dp"
-        android:gravity="center"
-        android:textColor="@color/white"
-        android:text="@string/showcase_view_whole_nearby_activity" />
-
-</LinearLayout>