fixing order of media title sources
fixing 2 bugs in media caption creation
fix #6349 media description separate from title
ref #6301 sources as inline elements on media page
fix #6301 implementing display of sources and annotations for media
turning useless media related theme-functions into compose or plain markup functions - step 2: moving functions to includes file
fix #6260 fixing display of rights on image page
refactoring media_metadata function
moving content of folder 7.x up to the repository root