All the modes use their own somewhat unintuitive buttons for pen/brush control that are intended to be used for debugging & calibration, and really every mode needs some kind of method of doing this if intends to paint/move the bot on its own. Doing demos on applications that draw and don't have a calibration routine/buttons means either fiddling with a moving pen, or playing around on the CNCServer localhost page. Almost manageable for dev use, but still pretty crappy from all sides. Not to mention the more re-use we get, the more useful & unified things can be.

I'm imagining something akin to the simple step by step interface window from #130, with clear images from the wiki showing what to do when for particular bots. We might not even need to run the unlock, just simply move to the "corner" of the page for WCB, or perhaps the center "park" for EggBot.

I would likely not remove any buttons from the print mode, just add a new one for "Calibrate" below the others, and would have a new toolbar button to the left of the question mark. Neat thing is this would be a perfect time to ask the user what implement they plan on using, changing settings defaults for overshoot, etc based on brush length, pen type, etc.

Will post/take suggestions of what the "wizard" steps might be.