Fixed columns of order items details within management.
Fixed display of amount for discounts within management.
Removed border.
Fixed calculation of discount net price within order; issue #36
Bumped version to 0.7.7.
Added field 'link' to action add form; updated docs; issue #51.
Do not remove products on manufacturer delete
fixed issue #13 in lfs_theme
fix issue #13 again
Merge with upstream changes in branches/0.7
recompile .mo file for es_MX