Implement reply count indicator to track web UI (#2467)

Addresses #882

app/src/test/java/com/keylesspalace/tusky/BottomSheetActivityTest.kt

@@ -74,6 +74,7 @@ class BottomSheetActivityTest {
         emojis = emptyList(),
         reblogsCount = 0,
         favouritesCount = 0,
+        repliesCount = 0,
         reblogged = false,
         favourited = false,
         bookmarked = false,

app/src/test/java/com/keylesspalace/tusky/FilterTest.kt

@@ -166,6 +166,7 @@ class FilterTest {
             emojis = emptyList(),
             reblogsCount = 0,
             favouritesCount = 0,
+            repliesCount = 0,
             reblogged = false,
             favourited = false,
             bookmarked = false,

app/src/test/java/com/keylesspalace/tusky/components/timeline/StatusMocker.kt

@@ -29,6 +29,7 @@ fun mockStatus(id: String = "100") = Status(
     emojis = emptyList(),
     reblogsCount = 1,
     favouritesCount = 2,
+    repliesCount = 3,
     reblogged = false,
     favourited = true,
     bookmarked = true,

app/src/test/java/com/keylesspalace/tusky/db/TimelineDaoTest.kt

@@ -443,6 +443,7 @@ class TimelineDaoTest {
             emojis = "emojis$statusId",
             reblogsCount = 1 * statusId.toInt(),
             favouritesCount = 2 * statusId.toInt(),
+            repliesCount = 3 * statusId.toInt(),
             reblogged = even,
             favourited = !even,
             bookmarked = false,