Page History

Make sure that you are always making changes to the latest version of the original repository. This means that the "Branch" button above the list of file should read "branch: development", and not "branch: master".

The development 1.6 branch is the one where all current works are pushed to.
The master branch is a snapshot of the development branch which was used to build the previous stable version of PrestaShop.
The release branch (if available) is the forthcoming stable version.
Others branches are for specific current projects, and should not be touched.