removed unused legacy code
result - small refactoring
Little hack to allow users save their plots
Merge pull request #99 from honzagrec/master

thanks; Little hack to allow users save their plots
server stopping
more module shuffling; api_rename -> singular; hash based snapping (etc); client updates of existing objects no longer possible; get_field_mtime is now cube_api.stats() which returns mtime, and more
merge of jniznas commit 78f00fb
merge of api + killthemall branch changes from jniznan