Resolve "Enable creation of Datasets from the "My Files" Table"

Closes #88

See merge request !49

Resolve "Implement a Switch User ("su") admin function"

Closes #75

See merge request !48

Resolve "Display fields selection widget breaks if hstore field set to empty / {}"

Closes #104

See merge request !47

Merge branch '100-ajouter-end-point-json-pour-obtenir-les-annotations-meta-donnees-d-un-fichier-a-partir-de-son-id' into 'master'

Resolve "Ajouter end-point JSON pour obtenir les annotations + méta-données d'un fichier à partir de son ID"

Closes #100

See merge request !46

Resolve "uppercase IDs"

Closes #102

See merge request !45

Merge branch 'master' into 100-ajouter-end-point-json-pour-obtenir-les-annotations-meta-donnees-d-un-fichier-a-partir-de-son-id

with selection.

Resolve "unique ID for datafile and dataset" + Remove data management in admin view + data manager func

Closes #97

See merge request !44