Added history functionality for swapping

fixed: double-clicking an object and editing it that way would not register to history

when inlining (as an action), reinterpret the inlinees so that there's not any pointer mess-ups

more restyle/refactor

restyle..

Removed the two string arrays containing object types and icon names, moved these as LDObjects' virtual functions

Cleaned up the toolbars, removed clutter by removing most of the not-so-often-used items

removed the history dialog, it doesn't fit in with the new history system

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mercurial