Maintenance of name mapping images

Within my Project Suite, I have a common project, which has functions and name mappings defined. I have images for the side menu navigation and toolbar - it's a web application. When developing, the team uses the common project, and can refer to either the name mappings or images. Any new projects, we don't store images in our repository, as this becomes to huge. It's helpful when debugging on their local machines, but is not required for the project suite. Name mappings are named appropriately and it's a decision we've made not to store images.