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Changed to conditional compile for AT90USB issue

Original Mesh Bed Leveling replacement put at top of UBL Menu Options to
help facilitate the removal of the Original Mesh Bed Leveling.

Radar display (and control) of the UBL Interactive Mesh Editing.

Add support for the PCA9632 PWM color LED driver used on the Ultimaker 2 and Wanhao Duplicator 6.

* excentric probe config fix

* undo last commit

* eccentric probe fix

* oops

* !stow after each probe

* deploy/stow fix

* E parameter + bit of cleanup

* comment

* LCD menu fix

* Remove ADVANCED_PAUSE_FEATURE requirement for PROBING_HEATERS_OFF

* Add HEATER_IDLE_HANDLER conditional

Following #6990 some more translations and some grammar fixes

* Updates for ensure_safe_temperature

* M600 fixes

I recently upgraded my Marlin to V1.1.x and decided to publish my fix to make marlin compile properly when #define board megatronics 2 in combination with #define reprapworld keypad v1.1. It was previously described in the comments of a closed pull request. MarlinFirmware#472. All the buttons on the keypad are now operational.

* [New Feature] I2C position encoder support

I plan to continue improving/cleaning this up, as there areas that need work.

* let the cleanups begin.

* progress

* more progress

* comments, rename files, etc.

* clean

* Cleanups per thinkyhead

* a few more cleanups

* cleanups, bugfixes, etc.

* remove unnecessary passes_test(), additional cleanups/optimizations

* cleanups

* misc.

* Fix up I2CPEM.init() and a few other things.

* organize, fix, rename, etc.

* more optimization

* a few more tweaks

There was quite a lot to translate this time. I'm not absolutely confident with the whole UBL stuff and it's a PITA to translate. I don't use any kind of levelling myself as i just have a perfectly level cast aluminium plate as bed.
So maybe someone who really uses it might take a closer look at it after it's merged.

Line 7830 prevented successfull compilation when #define CASE_LIGHT_ENABLE is uncommented