Add 'Show on a map' button to Location in profile, fix layout (#26214)

Not too important, but I think that it'd be a pretty neat touch.

Also fixes some layout bugs introduced by a previous PR.

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Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-authored-by: Caesar Schinas <caesar@caesarschinas.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/web/user/profile.go

@@ -52,6 +52,7 @@ func userProfile(ctx *context.Context) {
 
 	ctx.Data["Title"] = ctx.ContextUser.DisplayName()
 	ctx.Data["PageIsUserProfile"] = true
+	ctx.Data["UserLocationMapURL"] = setting.Service.UserLocationMapURL
 
 	// prepare heatmap data
 	if setting.Service.EnableUserHeatmap {