Remove outdated deployment tip.
Fix N+1 on Shipment#to_package call to variant from Differentiator

On checkout/delivery page, a page refresh calls out to the
`Stock::Differentiator`, which loads a variant from each `inventory_unit`

The fix eliminates N+1 sql select for each variant.

fixes #5775
More icons [backend].

This adds all Glyphicons Halflings that ships with Bootstrap v3.3.1.0.
It also provides a more declarative way how to extend and map icons so
custom icons can be used.

fixes #5778
Relaxing acts_as_list dependency.

0.5.0 is currently the latest.

fixes #5779
require latest aal.