Fix various problems around projects board view (#30696)

The previous implementation will start multiple POST requests from the
frontend when moving a column and another bug is moving the default
column will never be remembered in fact.

- [x] This PR will allow the default column to move to a non-first
position
- [x] And it also uses one request instead of multiple requests when
moving the columns
- [x] Use a star instead of a pin as the icon for setting the default
column action
- [x] Inserted new column will be append to the end
- [x] Fix #30701 the newly added issue will be append to the end of the
default column
- [x] Fix when deleting a column, all issues in it will be displayed
from UI but database records exist.
- [x] Add a limitation for columns in a project to 20. So the sorting
will not be overflow because it's int8.

---------

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit a303c973e0264dab45a787c4afa200e183e0d953)

Conflicts:
	routers/web/web.go
	e91733468ef726fc9365aa4820cdd5f2ddfdaa23 Add missing database transaction for new issue (#29490) was not cherry-picked
	services/issue/issue.go
	fe6792dff3 Enable/disable owner and repo projects independently (#28805) was not cherry-picked

routers/web/org/projects.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"strconv"
 	"strings"
 
 	"code.gitea.io/gitea/models/db"
@@ -390,74 +389,6 @@ func ViewProject(ctx *context.Context) {
 	ctx.HTML(http.StatusOK, tplProjectsView)
 }
 
-func getActionIssues(ctx *context.Context) issues_model.IssueList {
-	commaSeparatedIssueIDs := ctx.FormString("issue_ids")
-	if len(commaSeparatedIssueIDs) == 0 {
-		return nil
-	}
-	issueIDs := make([]int64, 0, 10)
-	for _, stringIssueID := range strings.Split(commaSeparatedIssueIDs, ",") {
-		issueID, err := strconv.ParseInt(stringIssueID, 10, 64)
-		if err != nil {
-			ctx.ServerError("ParseInt", err)
-			return nil
-		}
-		issueIDs = append(issueIDs, issueID)
-	}
-	issues, err := issues_model.GetIssuesByIDs(ctx, issueIDs)
-	if err != nil {
-		ctx.ServerError("GetIssuesByIDs", err)
-		return nil
-	}
-	// Check access rights for all issues
-	issueUnitEnabled := ctx.Repo.CanRead(unit.TypeIssues)
-	prUnitEnabled := ctx.Repo.CanRead(unit.TypePullRequests)
-	for _, issue := range issues {
-		if issue.RepoID != ctx.Repo.Repository.ID {
-			ctx.NotFound("some issue's RepoID is incorrect", errors.New("some issue's RepoID is incorrect"))
-			return nil
-		}
-		if issue.IsPull && !prUnitEnabled || !issue.IsPull && !issueUnitEnabled {
-			ctx.NotFound("IssueOrPullRequestUnitNotAllowed", nil)
-			return nil
-		}
-		if err = issue.LoadAttributes(ctx); err != nil {
-			ctx.ServerError("LoadAttributes", err)
-			return nil
-		}
-	}
-	return issues
-}
-
-// UpdateIssueProject change an issue's project
-func UpdateIssueProject(ctx *context.Context) {
-	issues := getActionIssues(ctx)
-	if ctx.Written() {
-		return
-	}
-
-	if err := issues.LoadProjects(ctx); err != nil {
-		ctx.ServerError("LoadProjects", err)
-		return
-	}
-
-	projectID := ctx.FormInt64("id")
-	for _, issue := range issues {
-		if issue.Project != nil {
-			if issue.Project.ID == projectID {
-				continue
-			}
-		}
-
-		if err := issues_model.ChangeProjectAssign(ctx, issue, ctx.Doer, projectID); err != nil {
-			ctx.ServerError("ChangeProjectAssign", err)
-			return
-		}
-	}
-
-	ctx.JSONOK()
-}
-
 // DeleteProjectBoard allows for the deletion of a project board
 func DeleteProjectBoard(ctx *context.Context) {
 	if ctx.Doer == nil {