Adjusted composer module requirements so to be a bit more flexible, and also use stable version of versioned grid field.
Travis will test master branch of cms/framework, but failure is allowed.

Fixes #274
Removed hack that for core that has been fixed in

issue: https://github.com/silverstripe/silverstripe-framework/issues/1682
fix: https://github.com/silverstripe/silverstripe-framework/pull/3019
Bumped up ListSorter composer requirement to 2.0
FIX: removed OrderModifierLazyLoadFix extension call from OrderModifier
Fixed bug when printing order in admin
Merge branch 'patch-print-order-fix' into custom-aplus3