create the new FileServer and HandleDir, deprecate the rest APIBuilder/Party static methods and more

relative: https://github.com/kataras/iris/issues/1283 and removing pongo2 from vendor: https://github.com/kataras/iris/issues/1284

Former-commit-id: 3ec57b349f99faca2b8e36d9f7252db0b6ea080d

_examples/tutorial/dropzonejs/README.md

@@ -101,7 +101,7 @@ func main() {
     app.RegisterView(iris.HTML("./views", ".html"))
 
     // Make the /public route path to statically serve the ./public/... contents
-    app.StaticWeb("/public", "./public")
+    app.HandleDir("/public", "./public")
 
     // Render the actual form
     // GET: http://localhost:8080

_examples/tutorial/dropzonejs/README_PART2.md

@@ -168,7 +168,7 @@ func main() {
     app := iris.New()
     app.RegisterView(iris.HTML("./views", ".html"))
 
-    app.StaticWeb("/public", "./public")
+    app.HandleDir("/public", "./public")
 
     app.Get("/", func(ctx iris.Context) {
         ctx.View("upload.html")

_examples/tutorial/dropzonejs/src/main.go

@@ -124,7 +124,7 @@ func main() {
 	app := iris.New()
 	app.RegisterView(iris.HTML("./views", ".html"))
 
-	app.StaticWeb("/public", "./public")
+	app.HandleDir("/public", "./public")
 
 	app.Get("/", func(ctx iris.Context) {
 		ctx.View("upload.html")

_examples/tutorial/mongodb/README.md

@@ -8,7 +8,7 @@ Article is coming soon, follow and stay tuned
 Read [the fully functional example](main.go).
 
 ```sh
-$ go get -u github.com/mongodb/mongo-go-driver
+$ go get -u go.mongodb.org/mongo-driver/...
 $ go get -u github.com/joho/godotenv
 ```
 

_examples/tutorial/mongodb/main.go

@@ -1,6 +1,6 @@
 package main
 
-// go get -u github.com/mongodb/mongo-go-driver
+// go get -u go.mongodb.org/mongo-driver
 // go get -u github.com/joho/godotenv
 
 import (
@@ -19,7 +19,7 @@ import (
 
 	"github.com/kataras/iris"
 
-	"github.com/mongodb/mongo-go-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo"
 )
 
 const version = "0.0.1"

_examples/tutorial/mongodb/store/movie.go

@@ -4,11 +4,11 @@ import (
 	"context"
 	"errors"
 
-	"github.com/mongodb/mongo-go-driver/bson"
-	"github.com/mongodb/mongo-go-driver/bson/primitive"
-	"github.com/mongodb/mongo-go-driver/mongo"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
 	// up to you:
-	// "github.com/mongodb/mongo-go-driver/mongo/options"
+	// "go.mongodb.org/mongo-driver/mongo/options"
 )
 
 type Movie struct {

_examples/tutorial/online-visitors/main.go

@@ -23,7 +23,7 @@ func main() {
 	app.Any("/iris-ws.js", websocket.ClientHandler())
 
 	// register static assets request path and system directory
-	app.StaticWeb("/js", "./static/assets/js")
+	app.HandleDir("/js", "./static/assets/js")
 
 	h := func(ctx iris.Context) {
 		ctx.ViewData("", page{PageID: "index page"})

_examples/tutorial/url-shortener/main.go

@@ -49,7 +49,7 @@ func newApp(db *DB) *iris.Application {
 	app.RegisterView(tmpl)
 
 	// Serve static files (css)
-	app.StaticWeb("/static", "./resources")
+	app.HandleDir("/static", "./resources")
 
 	indexHandler := func(ctx iris.Context) {
 		ctx.ViewData("URL_COUNT", db.Len())

_examples/tutorial/vuejs-todo-mvc/README.md

@@ -500,7 +500,7 @@ func main() {
     // no need for any server-side template here,
     // actually if you're going to just use vue without any
     // back-end services, you can just stop afer this line and start the server.
-    app.StaticWeb("/", "./public")
+    app.HandleDir("/", "./public")
 
     // configure the http sessions.
     sess := sessions.New(sessions.Config{

_examples/tutorial/vuejs-todo-mvc/src/web/main.go

@@ -19,7 +19,7 @@ func main() {
 	// no need for any server-side template here,
 	// actually if you're going to just use vue without any
 	// back-end services, you can just stop afer this line and start the server.
-	app.StaticWeb("/", "./public")
+	app.HandleDir("/", "./public")
 
 	// configure the http sessions.
 	sess := sessions.New(sessions.Config{