#158096, part 2: Rework the way the marker images are set up. This should fix some IE oddness as well.

The exact behavior needs further evaluation.

Patch modified by me.
Thanks for the great idea, psletten!

Thanks, jsenich!

* Fix deleting circles.

No wonder circles were acting weird in certain places!

* Fix polygon and rpolygon drawing.
* Fix some doxygen.

* Rewrite of overlayeditor to use the new feature editing tools Google provides in newer api versions.

Fix map type control change, generalize.

This should also fix #197012.

It occurs to me that this function is actually map-specific.

The real reason for the confusion.

I present, the REAL source of the bug. A bug in the expansion was setting undefined shadows to '' instead of an empty shadow definition.

The original intent of the code was to do this. Due to a screwup, I was checking q.shadow instead of q.shadow.f. Since I'm now checking the right place, remove the cargo cult typeof from an earlier workaround that didn't actually fix anything...

Roll back incorrect if() inside of for..in. (Instead, I am going over to the "Don't you dare extend Object.prototype" camp)
More jslinting.

Let's add a maximum initial zoom that anything that changes zoom automatically isn't allowed to go over. This makes using autozoom on the location blocks work much better.

Thanks, kndr!

Let the macro manager handle not setting id's in the correct manner. People were not aware id isn't actually mandatory anymore.

Thanks!

Don't double-create clusterer markers.
For some reason I missed this one when unifying the marker handlers. Sorry...

Hopefully this fix works.