opentxs-core: move crypto files to own subdir
opentxs-core: move crypto headers to own subdir
Merge pull request #87 from toxeus/crypto

opentxs-core: move crypto files to own subdir
Break dependency on transactionType to prepare move out of helper function.
Moved out LoadAbbreviatedRecord from OTTransaction.
Rearranged things inside OTTransaction header.
Removed unnecessary release functions.
Removed commented stuff.
Removed unused angel :)
Removed unused function.
Removed unused function.
Include path fixes for opentxs-server usage.