Update admin settings layout for Spree 3.0.0.beta
Use bundle exec.
Fix so settings can be set with preferences param.
Relax cops.
Update (c) year to 2015.
Cop styling.

Use 2 (not 23) spaces for indenting an expression spanning multiple
lines.
Set high timeout for feature specs.
Test latest 2.2 on Travis.
Add missing preference test support.
Remove faulty shipment controller etc.

Need to rework this part from scratch.