[+]BO : add a flag ALL (ALL languages) for set a value to all languages

It duplicate the value to all language to set a numeric value esay to all language like (lenght, weight...). It's very simply for encode multilingual product features.
[*] BO : Added B2B info to orderview
Added links to subcategory pages
[*] MO : blocknewsletter - refactored (un)subscribe process
IT Standard Rate (22%)
[-] PDF : PNG files take up to 1 second to be processed by TCPDF - Replaced the default PNG logo by a jpg for PDF.
// install optimizations
// oups
// grmbl
// follow up https://github.com/PrestaShop/PrestaShop/commit/ca44205b7536619c93da0b337d169e7ed19f746d
//
// Fixed label #PSCSX-271
// update modules tpl
// some typographic and atialiasing tweaks
// preparing bootstrap switch to official repo + update font-awesome to v4
// Added meta information for partner modules
// BO: partners and add ons label for modules list view
Merge pull request #1188 from neemzy/refactor-unsubscribe

[*] MO : blocknewsletter - refactored (un)subscribe process
Merge pull request #1195 from djfm/1.6

[*] LO: Updated French VAT rates for 2014
Merge pull request #1191 from Balestrino/1.6

// IT Standard Rate (22%)