R4R: Move generate_only and simulate to POST body in REST txs (#3060)

* Move generate_only and simulate to POST body in REST txs

Closes: #3056

* Run make format

* drop extra else block, outdent its block, and make linter happy

* Update PENDING.md

* Update LCD swagger docs

types/context_test.go

@@ -8,9 +8,10 @@ import (
 	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/libs/log"
 
+	abci "github.com/tendermint/tendermint/abci/types"
+
 	"github.com/cosmos/cosmos-sdk/store"
 	"github.com/cosmos/cosmos-sdk/types"
-	abci "github.com/tendermint/tendermint/abci/types"
 )
 
 type MockLogger struct {

types/decimal_test.go

@@ -6,8 +6,9 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	"github.com/cosmos/cosmos-sdk/codec"
 	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/codec"
 )
 
 // create a decimal from a decimal string (ex. "1234.5678")

types/errors.go

@@ -4,9 +4,10 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/cosmos/cosmos-sdk/codec"
 	cmn "github.com/tendermint/tendermint/libs/common"
 
+	"github.com/cosmos/cosmos-sdk/codec"
+
 	abci "github.com/tendermint/tendermint/abci/types"
 )