database:
ent:
add `raw_ext` field in file schema
remove `filename` field in file schema
migrate:
add migration v5
image:
`Inspect` function will always detect image format
action:
remove `Update*Files` functions
always use inspect file format when creating or uploading files
task/artworks:
`CheckArtworks` and `CheckArtworksID` will not longer call `Update*Files` functions
Hubert Chen
dbdf086401
