Merge pull request #1850 from cinscaen/patch-2

[-] Call Field Callback for CSV Export
Merge branch '1.6' of https://github.com/PrestaShop/PrestaShop into 1.6
[-] BO : Fix bug #PSCSX-2152, collapse / expand categories tree
// help feedback WIP
PrestaShop BUG Fix #PSCFV-12134
[-] FO : Fix bug #PSCSX-2182, outline on fancybox
Merge pull request #1851 from flooris/1.6

[-] CORE : Fix bug #PSCFV-12134, no shop association in Tools::getPath
PrestaShop BUG Fix #PSCFV-12134
// follow up #PSCSX-2171
[-] FO : Fix bug #PSCSX-2216, uniform conflict with radio inputs
// Adding clear xml cache on addons connection
// Adding clear xml cache on addons connection
Merge branch 'release' of ssh://github.com/PrestaShop/PrestaShop into release
// help + login WIP
Merge branch '1.6' of https://github.com/PrestaShop/PrestaShop into 1.6
// follow up #PSCSX-2171
[*] FO : better small screen quickview handling #PSCSX-2029
//fixed bug #PSCSX-2087
Merge branch 'release' of https://github.com/PrestaShop/PrestaShop into release
[+] BO : contextual help