add tinymce to gitignore so it can be vendored for offline use
add file_type info for media downloaded from url
improve POST data field names used by upload.php
expose directus_media
major refactor:
* add support for "custom" pages that can wrap browse and edit with custom names
* make modular table / row / field generation functions (leaving in functions.php for now)
* move media specific ui (there isn't much) into generation functions and make media.php a wrapper
make adding / deleting items from custom_pages work
remove swap and delete from media preview field
fix save & stay
remove media specific warning
make modal edit views infinitely nestable
fix spacing in edit header
fix new-only relational fields
only filter visible fields
trim leading and trailing option glue from table row fields
ensure modal edit has table meta infos
try to make all input fields the same width
add relational waterfall field type
add field aliasing
get proper order for relational field previews on browse page
don't show relationships to deleted things