[Refs: Peerunity/Peerunity#42] Update all of the Peerunity icons (both realnet and testnet) and correct the locations where old Peercoin logos were being called for Windows toolbars. Remove references and assets that still called the old 'Bitcoin.png,' 'Bitcoin.ico,' and 'Bitcoin.icns' files. Remove the 'ppcoin.png,' 'ppcoin.ico,', 'ppcoin.icns,' and 'ppcoin_testnet.png' files and references.
[Refs: Peerunity/Peerunity#42] Fix a duplicated alias that was causing a warning during compilation.
Merge branch 'master' of github.com:Peerunity/Peerunity into unity.branding-fixes.merge

Conflicts:
	peerunity.pro
	share/setup.nsi
Merge pull request #53 from brossi/unity.branding-fixes

Complete Peerunity logo integration