Drawn dialogs and BetterHud now draw together

• New: drawn dialogs that show a player's head replace Minecraft's text shader, and so does BetterHud's HUD. Dialog Engine now merges the other plugin's shader into the drawn dialog pack so both draw, with no extra pack to download. The console says what was merged and what could not be.
• When a merge happened, a joining player's pack waits up to three seconds for the other plugin's pack, so the drawn pack lands on top in one load. If the other pack arrives later anyway, the drawn pack is sent again, on top.
• New settings: shaders.merge and shaders.notify-players, added to your config.yml automatically. Players with the new dialogengine.shaders permission (ops) are told in chat.
• The drawn samples are redrawn so they can be merged. Drawn dialogs you made before this update need sending again from /de edit to be merged.