Move jquery-minicolors to npm/webpack (#12305)

* Move jquery-minicolors to npm/webpack

- Unvendor and add as npm dependency
- Removed unneeded backend variable
- Fixed existing bug where picker would previously initizalize to the
  same green color when editing a label.

There was probably a version bump because the previous version was
over 3 years old but it seems to be compatible.

* use file-loader

* trailing comma and comment update

* misc tweaks

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

routers/repo/issue_label.go

@@ -23,7 +23,6 @@ func Labels(ctx *context.Context) {
 	ctx.Data["Title"] = ctx.Tr("repo.labels")
 	ctx.Data["PageIsIssueList"] = true
 	ctx.Data["PageIsLabels"] = true
-	ctx.Data["RequireMinicolors"] = true
 	ctx.Data["RequireTribute"] = true
 	ctx.Data["LabelTemplates"] = models.LabelTemplates
 	ctx.HTML(200, tplLabels)