Improve gitignore
Improve gitignore

shagi/cmsplugin_gallery_filer,driesdesmet/cmsplugin_headergallery,SocialSchools/cmsplugin_gallery,centralniak/cmsplugin_gallery,Alir3z4/cmsplugin-filery,jasekz/cmsplugin-filery,centralniak/cmsplugin_gallery,heckfi/cmsplugin_gallery_filer,SocialSchools/cmsplugin_gallery,driesdesmet/cmsplugin_headergallery,heckfi/cmsplugin_gallery_filer,shagi/cmsplugin_gallery_filer