API, switchable MD160,

Now uses working RIPE-MD160 by default but can be switched to broken MD160 using flag in blockchain config,
e.g. for Qora v1 blockchain.

Replaced API signature/reference examples with descriptive text as they weren't very useful.
Replaced API address examples with ones generated using working MD160.

Added GET /transactions/signature/{signature}/raw that returns raw transaction in base58 encoding.

Added "ignoreValidityChecks" query param to POST /transactions/decode to bypass INVALID_REFERENCE errors
if supplying an old/speculative transaction that can't be added to unconfirmed transaction pile.

Finally fixed creating inital assets in BlockChain.

Controller now inserts BouncyCastle as highest priority Security Provider.

TransactionData & transaction repository now tries to return transaction's block height in data when possible.

blockchain.json

@@ -6,9 +6,10 @@
 	"blockTimestampMargin": 500,
 	"maxBytesPerUnitFee": 1024,
 	"unitFee": "1.0",
+	"useBrokenMD160ForAddresses": true,
 	"genesis": {
 		"assets": [
-			{ "name": "QORA", "description": "QORA coin" }
+			{ "name": "QORA", "description": "QORA coin", "quantity": 10000000000, "isDivisible": true, "reference": "28u54WRcMfGujtQMZ9dNKFXVqucY7XfPihXAqPFsnx853NPUwfDJy1sMH5boCkahFgjUNYqc5fkduxdBhQTKgUsC" }
 		]
 		"timestamp": "1400247274336",
 		"generatingBalance": "10000000",