Related refactors to ctx.FormX functions (#16567)

* use FormTrim if posible

* speedup goGet

* only convert if nessesary

routers/web/user/auth.go

@@ -1491,8 +1491,7 @@ func ForgotPasswd(ctx *context.Context) {
 		return
 	}
 
-	email := ctx.FormString("email")
-	ctx.Data["Email"] = email
+	ctx.Data["Email"] = ctx.FormString("email")
 
 	ctx.Data["IsResetRequest"] = true
 	ctx.HTML(http.StatusOK, tplForgotPassword)

routers/web/user/home.go

@@ -204,7 +204,7 @@ func Milestones(ctx *context.Context) {
 		isShowClosed = ctx.FormString("state") == "closed"
 		sortType     = ctx.FormString("sort")
 		page         = ctx.FormInt("page")
-		keyword      = strings.Trim(ctx.FormString("q"), " ")
+		keyword      = ctx.FormTrim("q")
 	)
 
 	if page <= 1 {

routers/web/user/notification.go

@@ -8,7 +8,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"strconv"
 	"strings"
 
 	"code.gitea.io/gitea/models"
@@ -59,7 +58,7 @@ func Notifications(c *context.Context) {
 
 func getNotifications(c *context.Context) {
 	var (
-		keyword = strings.Trim(c.FormString("q"), " ")
+		keyword = c.FormTrim("q")
 		status  models.NotificationStatus
 		page    = c.FormInt("page")
 		perPage = c.FormInt("perPage")
@@ -144,9 +143,9 @@ func getNotifications(c *context.Context) {
 // NotificationStatusPost is a route for changing the status of a notification
 func NotificationStatusPost(c *context.Context) {
 	var (
-		notificationID, _ = strconv.ParseInt(c.Req.PostFormValue("notification_id"), 10, 64)
-		statusStr         = c.Req.PostFormValue("status")
-		status            models.NotificationStatus
+		notificationID = c.FormInt64("notification_id")
+		statusStr      = c.FormString("status")
+		status         models.NotificationStatus
 	)
 
 	switch statusStr {

routers/web/user/profile.go

@@ -187,7 +187,7 @@ func Profile(ctx *context.Context) {
 		orderBy = models.SearchOrderByRecentUpdated
 	}
 
-	keyword := strings.Trim(ctx.FormString("q"), " ")
+	keyword := ctx.FormTrim("q")
 	ctx.Data["Keyword"] = keyword
 	switch tab {
 	case "followers":