Add semi-colon before and after packed js

This prevents JavaScript error if packed files do not start or hand with an expression delimiter.
Add semi-colon before and after packed js

This prevent JavaScript error if files do not start and end with a delimiter. This doesn't apply to inline script.
Trim leading semi-colons to prevent doubles
Merge pull request #1871 from shaffe-fr/1.6

[*] CORE : Add semi-colon before and after packed js files
[-] FO: Improve performance of some SQL requests #PSCSX-2321
Merge branch '1.6' of github.com:PrestaShop/PrestaShop into 1.6
[-] FO: Improve performance of some SQL requests #PSCSX-2321
[-] CORE : Fix bug #PSCFV-12169, bad call to Product::cleanPositions
Trim leading semi-colons to prevent doubles
Conflicts:classes/Media.php
[-] CORE : Fix bug #PSCFV-12169, bad call to Product::cleanPositions
[-] FO : Fix bug #PSCSX-1730, could not translate customization upload inputs
[-] FO : Fix bug #PSCSX-1730, could not translate customization upload inputs
[-] BO : Fix bug #PSCSX-1821, shop url when themeconfugurator not enabled
[-] FO : Fix bug #PSCSX-2236, bad check on addJs array
[-] FO : Fix bug #PSCFV-12176, var not sanitized in stores.js
[-] LO : Fix bug #PSCSX-2348, html in text mails
[-] CORE : Fix bug #PSCSX-2361, bad closing tag in ajax requests
// Remove author detail
Merge branch 'release' of github.com:PrestaShop/PrestaShop into release
// AdminTab.php: typos.