Progress on little important things

removing .mov for now until we can figure out solution with videojs, added model to track username changes, got chat creation flow down, progress on bookmark collections, albums, filtering blocks/mutes from group, explore, collection timelines

db/migrate/20201222040559_create_account_username_changes.rb

@@ -0,0 +1,10 @@
+class CreateAccountUsernameChanges < ActiveRecord::Migration[5.2]
+  def change
+    create_table :account_username_changes do |t|
+      t.belongs_to :account, foreign_key: { on_delete: :cascade }, null: false
+      t.text :from_username, null: false, default: ''
+      t.text :to_username, null: false, default: ''
+      t.timestamps
+    end
+  end
+end