Show image descriptions in gallery (#630)

* Add circleci

* Commit to maybe fix ci

* Suppress false positives in lint

* Disable linting for tests in ci

* Add image descriptions to gallery

* Fix test

* [CI] Attempt to fix OOM error

* [CI] Attempt to fix OOM error, 2

* Add option to open status from media

* fix theme issue

* increase linespacing on media description

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

@@ -36,7 +36,7 @@ data class Status(
         var sensitive: Boolean,
         @SerializedName("spoiler_text") val spoilerText: String,
         val visibility: Visibility,
-        @SerializedName("media_attachments") var attachments: Array<Attachment>,
+        @SerializedName("media_attachments") var attachments: List<Attachment>,
         val mentions: Array<Mention>,
         val application: Application?
 ) {