Remove Junk

[Hoikas]

These changes remove lots of dead, obsolete, and useless code.

• CSR and SimpleNet were removed for offering no visible benefit.
• All apps and tools that were obsoleted by eap's netcore rewrite have been removed.
• Obsolete library components (except pfKI and some pfCharacter stuff) have been removed.
• Obsolete PythonLib has been removed due to Boost dependencies and dependency on the old networking core.

[dpogue]

Apps/plPageInfo should not be removed, as it is especially useful for testing changes to the ResManager, KeyedObject, and page loading code.
plPageOptimizer should also probably not be removed, although I believe it needs updating to compile properly.

Both of those (and the plMD5 and plSHA tools) should probably be moved to the Tools folder.

[Hoikas]

plPageInfo has been restored

[Hoikas]

plPageOptimizer has been restored