Enable file attachments

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -3513,7 +3513,6 @@ typedef enum : NSUInteger {
     [gifAction setValue:gifImage forKey:@"image"];
     [actionSheet addAction:gifAction];
 
-    /*
     UIAlertAction *chooseDocumentAction =
         [UIAlertAction actionWithTitle:NSLocalizedString(@"MEDIA_FROM_DOCUMENT_PICKER_BUTTON",
                                            @"action sheet button title when choosing attachment type")
@@ -3527,6 +3526,7 @@ typedef enum : NSUInteger {
     [chooseDocumentAction setValue:chooseDocumentImage forKey:@"image"];
     [actionSheet addAction:chooseDocumentAction];
 
+    /*
     if (kIsSendingContactSharesEnabled) {
         UIAlertAction *chooseContactAction =
             [UIAlertAction actionWithTitle:NSLocalizedString(@"ATTACHMENT_MENU_CONTACT_BUTTON",

SignalServiceKit/src/Messages/OWSMessageSender.m

@@ -1221,7 +1221,9 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
         for (NSString *attachmentID in message.attachmentIds) {
             TSAttachmentStream *attachment = [TSAttachmentStream fetchObjectWithUniqueID:attachmentID];
             if (attachment == nil) { continue; }
-            [groupMessage addAttachmentWithKind:@"attachment" server:publicChat.server serverID:attachment.serverId contentType:attachment.contentType size:attachment.byteCount fileName:attachment.sourceFilename flags:0 width:@(attachment.imageSize.width).unsignedIntegerValue height:@(attachment.imageSize.height).unsignedIntegerValue caption:attachment.caption url:attachment.downloadURL linkPreviewURL:nil linkPreviewTitle:nil];
+            NSUInteger width = attachment.shouldHaveImageSize ? @(attachment.imageSize.width).unsignedIntegerValue : 0;
+            NSUInteger height = attachment.shouldHaveImageSize ? @(attachment.imageSize.height).unsignedIntegerValue : 0;
+            [groupMessage addAttachmentWithKind:@"attachment" server:publicChat.server serverID:attachment.serverId contentType:attachment.contentType size:attachment.byteCount fileName:attachment.sourceFilename flags:0 width:width height:height caption:attachment.caption url:attachment.downloadURL linkPreviewURL:nil linkPreviewTitle:nil];
         }
         [[LKPublicChatAPI sendMessage:groupMessage toGroup:publicChat.channel onServer:publicChat.server]
         .thenOn(OWSDispatch.sendingQueue, ^(LKGroupMessage *groupMessage) {