Replace sanselan#3

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mjohnsonengr wants to merge 3 commits intowitwall:masterfrom

windwardadmin:replace-sanselan

Commits on Jan 8, 2015

Added GaeVFS dependency; updated imageio.stream.FileCacehImageInputStream to use GaeVFS instead of standard File I/O for GAE compatibility
mjohnsonengr
committed
Added a way to install specific jars not available in Maven repositories to local Maven repository
mjohnsonengr
committed
Replaced sanselan with Apache Commons Imaging.
mjohnsonengr
committed