Update Basic.php

Should remove `id` element from HTML template in case this column is not sortable. Otherwise `id` from previous sortable column is left in template.
Merge pull request #536 from DarkSide666/patch-2

Update Basic.php
Add support for multi-column forms
Merge branch '4.3' of github.com:atk4/atk4 into 4.3
Upgrade Column view to 4.3
Half-way through fixing the form behavior for displaying errors.
no needed for new CSS
s..t
Installer layout is here.
Complain about field, when false.
added afterAdd hook for objects.

Better than extending add() methods!
Performance optimization of GiTemplate

I no longer add empty chunks into ->template. This should make
rendering up to twice as fast especially if you have many tags in your
template following one another.
Align installer
removed obsolete fields.

this was used for chaining addField(), but you shouldn’t do that
anymore.
Refactor form layouts. See my next push into atk4/docs
cleaned up old CSS files
add compact template.
bump jquery to 1.11 beta2
Refactor CRUD button columns.
cleanup spaces.