Timestamps on apps / routes (#614)

* route updated_at

* add app created at, fix some route updated_at bugs

* add app updated_at

TODO need to add tests through front end
TODO for validation we don't really want to use the validate wrapper since
it's a programmer error and not a user error, hopefully tests block this.

* add tests for timestamps to exist / change on apps&routes

* route equals at done, fix tests wit dis

* fix up the equals sugar

* add swagger

* fix rebase

* precisely allocate maps in clone

* vetted

* meh

* fix api tests

api/agent/protocol/json_test.go

@@ -7,7 +7,6 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/url"
-	"reflect"
 	"testing"
 
 	"github.com/fnproject/fn/api/models"
@@ -113,7 +112,7 @@ func TestJSONProtocolwriteJSONInputRequestWithoutData(t *testing.T) {
 		t.Errorf("Request body assertion mismatch: expected: %s, got %s",
 			"<empty-string>", incomingReq.Body)
 	}
-	if ok := reflect.DeepEqual(req.Header, incomingReq.Protocol.Headers); !ok {
+	if !models.Headers(req.Header).Equals(models.Headers(incomingReq.Protocol.Headers)) {
 		t.Errorf("Request headers assertion mismatch: expected: %s, got %s",
 			req.Header, incomingReq.Protocol.Headers)
 	}