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

baseapp/helpers.go

@@ -1,10 +1,11 @@
 package baseapp
 
 import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/tendermint/tendermint/abci/server"
 	abci "github.com/tendermint/tendermint/abci/types"
 	cmn "github.com/tendermint/tendermint/libs/common"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
 // nolint - Mostly for testing

baseapp/options.go

@@ -4,9 +4,10 @@ package baseapp
 import (
 	"fmt"
 
+	dbm "github.com/tendermint/tendermint/libs/db"
+
 	"github.com/cosmos/cosmos-sdk/store"
 	sdk "github.com/cosmos/cosmos-sdk/types"
-	dbm "github.com/tendermint/tendermint/libs/db"
 )
 
 // File for storing in-package BaseApp optional functions,

baseapp/query_test.go

@@ -4,9 +4,10 @@ import (
 	"fmt"
 	"testing"
 
-	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/stretchr/testify/require"
 	abci "github.com/tendermint/tendermint/abci/types"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
 // Test that we can only query from the latest committed state.