Add email to footer && remove unused variable

Allow insert of shop e-mail in pdf footer; one variable inside getLogo() found unused
doing the same with one step
Added option to set custom data for category tree

This way, we can use helper_tree inside helper_form more universaly
// modal_not_trusted.tpl: missing space
//form.tpl: wording

CSV import double negation for thumbnails removed.
Merge pull request #2128 from djfm/1.6

// fix installation on hhvm
// follow up https://github.com/PrestaShop/PrestaShop/pull/2126
[*] Project : ->getAllParents() for a category

Add a getAllParents() method to get all parents of a category
[-] BO : Fix PSCSX-3368 stock available correct if no combination and add one
[-] BO : Fix bug #PSCSX-3356, bad default combination when importing, thanks @thomasbo
Merge pull request #2130 from djfm/1.6

// fix PSCSX-3153, bye bye Krone, welcome Euro
Simple jQ to close alert messages

It is not important but when the user gets an alert, specially the error with the "X" feels like it should be closable.
e.g. In Authentication > Create an account > add a wrong email and click "Create an account".
[-] FO : fix bug #PSCSX-3418, bad colors list ordering in category
[-] BO : Fix PSCSX-3421 bulk delete attributes
git pushMerge branch '1.6' of github.com:PrestaShop/PrestaShop into 1.6
[*] Core: Add an option to use a relative protocol link in the class Link #PSCSX-3306
[-] CORE : Fix bug #PSCSX-3414, bad address formatting
// Update SQL export
// #PSCSX-3413

Signed-off-by: gRoussac <gregory.roussac@prestashop.com>
Merge pull request #2107 from AlexEven/patch-1

// modal_not_trusted.tpl: missing space