show status edits (#3049)

* show status edits part 1

* show status edits part 2 - load status edits

* fix code formatting

* add dialog to show status edits

* small improvements

* use ALIGN_CENTER to position status visibility icon when possible

* rename status_timestamp_info view to status_meta_info

* make dateFormat static

* remove commented-out code

* move edits to dedicated fragment

app/src/main/java/com/keylesspalace/tusky/entity/StatusEdit.kt

@@ -0,0 +1,15 @@
+package com.keylesspalace.tusky.entity
+
+import com.google.gson.annotations.SerializedName
+import java.util.Date
+
+data class StatusEdit(
+    val content: String,
+    @SerializedName("spoiler_text") val spoilerText: String,
+    val sensitive: Boolean,
+    @SerializedName("created_at") val createdAt: Date,
+    val account: TimelineAccount,
+    val poll: Poll?,
+    @SerializedName("media_attachments") val mediaAttachments: List<Attachment>,
+    val emojis: List<Emoji>
+)