Don't show reblog swipe action when reblogging is forbidden

Closes #313

Tusker/Preferences/StatusSwipeAction.swift

@@ -74,6 +74,8 @@ protocol StatusSwipeActionContainer: UIView {
     var navigationDelegate: any TuskerNavigationDelegate { get }
     var toastableViewController: ToastableViewController? { get }
     
+    var canReblog: Bool { get }
+    
     // necessary b/c the reblog-handling logic only exists in the cells
     func performReplyAction()
 }
@@ -108,7 +110,8 @@ private func createFavoriteAction(status: StatusMO, container: StatusSwipeAction
 }
 
 private func createReblogAction(status: StatusMO, container: StatusSwipeActionContainer) -> UIContextualAction? {
-    guard container.mastodonController.loggedIn else {
+    guard container.mastodonController.loggedIn,
+          container.canReblog else {
         return nil
     }
     let title = status.reblogged ? "Unreblog" : "Reblog"

Tusker/Views/Status/TimelineStatusCollectionViewCell.swift

@@ -822,6 +822,10 @@ extension TimelineStatusCollectionViewCell: StatusSwipeActionContainer {
     var navigationDelegate: TuskerNavigationDelegate { delegate! }
     var toastableViewController: ToastableViewController? { delegate }
     
+    var canReblog: Bool {
+        reblogButton.isEnabled
+    }
+    
     func performReplyAction() {
         self.replyPressed()
     }

Tusker/Views/Status/TimelineStatusTableViewCell.swift

@@ -445,6 +445,10 @@ extension TimelineStatusTableViewCell: StatusSwipeActionContainer {
     var navigationDelegate: TuskerNavigationDelegate { delegate! }
     var toastableViewController: ToastableViewController? { delegate }
     
+    var canReblog: Bool {
+        reblogButton.isEnabled
+    }
+    
     func performReplyAction() {
         self.replyPressed()
     }