ACL for Product Attribute and Product Value included
Only when auth is set to true in config/config.ini will this come into effect.
translation for register.tpl and code cleanup for print.tpl
Essentially taken from pvdl master
register.tpl: https://github.com/pvdl/simpleinvoices/commit/c8d516b9f47cd386e263a14891141b3675c1561f
print.tpl: 1 edit more than https://github.com/pvdl/simpleinvoices/commit/85f4f31b54c58fb01a553c22a91673f9e7909c9a
Each LANG string made to be on single line only
All changes incorporated from: https://github.com/geormanth/simpleinvoices/commit/ded5561df42065f3b94b7e2c7bdb14ddecae6526
Merge pull request #60 from apmuthu/master

ACL for Product Attribute and Product Value included