Fix various share screen issues

SignalMessaging/ViewControllers/SelectThreadViewController.m

@@ -129,6 +129,9 @@ NS_ASSUME_NONNULL_BEGIN
     [_tableViewController.view autoPinEdgeToSuperviewEdge:ALEdgeBottom];
     self.tableViewController.tableView.rowHeight = UITableViewAutomaticDimension;
     self.tableViewController.tableView.estimatedRowHeight = 60;
+    BOOL isIphone6OrSmaller = (UIScreen.mainScreen.bounds.size.height - 667) < 1;
+    CGFloat bottomInset = isIphone6OrSmaller ? LKValues.mediumSpacing : 34.0f;
+    self.tableViewController.tableView.contentInset = UIEdgeInsetsMake(0, 0, bottomInset, 0);
 }
 
 - (void)yapDatabaseModifiedExternally:(NSNotification *)notification

SignalMessaging/Views/ContactCellView.m

@@ -196,6 +196,9 @@ const CGFloat kContactCellAvatarTextMargin = 12;
                                                      name:kNSNotificationName_OtherUsersProfileDidChange
                                                    object:nil];
         [self updateProfileName];
+    } else {
+        self.nameLabel.text = thread.name;
+        [self.nameLabel setNeedsLayout];
     }
     
     [self updateAvatar];
@@ -211,6 +214,9 @@ const CGFloat kContactCellAvatarTextMargin = 12;
 
 - (void)updateAvatar
 {
+    [LKStorage readWithBlock:^(YapDatabaseReadTransaction *transaction) {
+        [LKMentionsManager populateUserPublicKeyCacheIfNeededFor:self.thread.uniqueId in:transaction]; // FIXME: This is a terrible place to do this
+    }];
     if (self.thread != nil) {
         [self.profilePictureView updateForThread:self.thread];
     } else {