update celements-core dependency to version 1.55
[maven-release-plugin] prepare release celements-photo-1.19
[maven-release-plugin] prepare for next development iteration
fix galleries space name for new gallery
fix flushCache after deleted
move content to component and web-module folders
add pom.xml to web-module
fix gitignore
add missing META-INF and WEB-INF
update celements-core dependendy to 1.58
update celements-photo dependency to 1.20
[maven-release-plugin] prepare release celements-photo-1.20
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release image-web-1.0
[maven-release-plugin] prepare for next development iteration
move GalleryEdit and GalleryView from celements-web to image-web module
add ImageGalleryOverview-Old.vm which imitates the old celements image
gallery listing
move resources/layouts/gallery from celements-web to image-web module
add arrow in overlay
fix editor dirty check failing