Rename buttons first and last instead of left/right. Add RTL styles.

This bled into normalizing z-indices for the action menus in the z-index.css. The tooltip id was not unique between action menus for ‘suprise’ and ‘paint’, so `mainTooltipId` was used as a prefix to make them unique.

Update chromedriver to the latest version 

Translate Spin & Arrow How-To

Update react-contextmenu to the latest version 

Show only 2 other tutorials in last step of each tutorial.

Pad bottom of costume/sound list to allow you to reach the bottom tile

Remove costume canvas and just display tiles using <img> tags

chore(package): update arraybuffer-loader to version 1.0.6

Enforce this by using `slice` so that no more are ever shown, which would mess up the layout.

Also fixes the issue where the card text could push out when translated into other languages

Add username setting to vm listener HOC

chore(package): update autoprefixer to version 9.0.1

Update bowser to the latest version 

Update react-modal to the latest version 

Update css-loader to the latest version 

Update react-virtualized to the latest version 

Update react-responsive to the latest version 

Update scratch-vm to the latest version 

Clear the workspace undo when the workspace updates.

Update scratch-vm to the latest version 

Bring dragging sprites to front

Update scratch-render to the latest version 

Update scratch-blocks to the latest version 

Update scratch-vm to the latest version 

This solves the issue where in both player and editor mode, draggable sprites would not get popped to the front of the draw list.

[DEVELOP] Temporarily exclude RTL languages from the language menu