AliEveEventManager

AliEveEventManager
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In Open() use AliRawReader::Create(rawPath) to instantiate AliRawReader.

In GotoEvent():
- do not call fESDTree->Refresh() as it crashes with root-5.21.1-alice;
- use AliRawReader::GotoEvent() and use iteration with NextEvent() as
  a fallback.

In Close() also close/destroy run-loader and raw-reader.

AliEveEventManagerEditor
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Add buttons "Last Event" and "Refresh" (reopens data-files).

alice-macros
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visscan_init.C - open editor on track-counter object after loading is
complete.

SplitGLView.C - do not expand projection-managers as projected objects
now react to changes in the projectable.