Update missing parts, improve til, and more

- Node
	- Updated configuration to initialize the interface to all the smart
	  contracts
- Common
	- Moved BlockData and BatchData types to common so that they can be
	  shared among: historydb, til and synchronizer
	- Remove hash.go (it was never used)
	- Remove slot.go (it was never used)
	- Remove smartcontractparams.go (it was never used, and appropriate
	  structs are defined in `eth/`)
	- Comment state / status method until requirements of this method are
	  properly defined, and move it to Synchronizer
- Synchronizer
	- Simplify `Sync` routine to only sync one block per call, and return
	  useful information.
	- Use BlockData and BatchData from common
	- Check that events belong to the expected block hash
	- In L1Batch, query L1UserTxs from HistoryDB
	- Fill ERC20 token information
	- Test AddTokens with test.Client
- HistryDB
	- Use BlockData and BatchData from common
	- Add `GetAllTokens` method
	- Uncomment and update GetL1UserTxs (with corresponding tests)
- Til
	- Rename all instances of RegisterToken to AddToken (to follow the smart
	  contract implementation naming)
	- Use BlockData and BatchData from common
		- Move testL1CoordinatorTxs and testL2Txs to a separate struct
		  from BatchData in Context
	- Start Context with BatchNum = 1 (which the protocol defines to be the
	  first batchNum)
	- In every Batch, set StateRoot and ExitRoot to a non-nil big.Int
	  (zero).
	- In all L1Txs, if LoadAmount is not used, set it to 0; if Amount is not
	  used, set it to 0; so that no *big.Int is nil.
	- In L1UserTx, don't set BatchNum, because when L1UserTxs are created
	  and obtained by the synchronizer, the BatchNum is not known yet (it's
	  a synchronizer job to set it)
	- In L1UserTxs, set `UserOrigin` and set `ToForgeL1TxsNum`.

test/til/lang_test.go

@@ -16,8 +16,8 @@ func TestParseBlockchainTxs(t *testing.T) {
 		Type: Blockchain
 
 		// token registrations
-		RegisterToken(1)
-		RegisterToken(2)
+		AddToken(1)
+		AddToken(2)
 
 		// deposits
 		Deposit(1) A: 10
@@ -34,7 +34,7 @@ func TestParseBlockchainTxs(t *testing.T) {
 
 		// set new batch
 		> batch
-		RegisterToken(3)
+		AddToken(3)
 
 		DepositTransfer(1) A-B: 15, 10 (1)
 		Transfer(1) C-A : 3 (1)
@@ -121,7 +121,7 @@ func TestParseErrors(t *testing.T) {
 
 	s = `
 		Type: Blockchain
-		RegisterToken(1)
+		AddToken(1)
 		Deposit(1) A: 10 20
 	`
 	parser = newParser(strings.NewReader(s))
@@ -146,7 +146,7 @@ func TestParseErrors(t *testing.T) {
 
 	s = `
 		Type: Blockchain
-		RegisterToken(1)
+		AddToken(1)
 		Transfer(1) A-B: 10 (255)
 	`
 	parser = newParser(strings.NewReader(s))
@@ -206,10 +206,10 @@ func TestParseErrors(t *testing.T) {
 	assert.Equal(t, "Line 2: Instruction of 'Type: Blockchain' when there is already a previous instruction 'Type: PoolL2' defined", err.Error())
 
 	s = `Type: Blockchain
-		RegisterToken(1)
-		RegisterToken(0)
+		AddToken(1)
+		AddToken(0)
 		`
 	parser = newParser(strings.NewReader(s))
 	_, err = parser.parse()
-	assert.Equal(t, "Line 3: RegisterToken can not register TokenID 0", err.Error())
+	assert.Equal(t, "Line 3: AddToken can not register TokenID 0", err.Error())
 }