Feature privileges

[gicaz]

Handle different level of permission ( no privilege, view, details,download, edit):

• no privilege: No datatype in List selection (queryBuilder and Create) -Overview: No datatype in List selection (Create). Searchable in queryBuilder, but no details, download and edit functions
• Details: No datatype in List selection (Create). Searchable in queryBuilder with details, but no download and edit method
• Download: No datatype in List selection (Create). Searchable in queryBuilder with details and download, but no edit method
• Edit: datatype in List selection (Create) and Searchable in queryBuilder with details, download and edit methods

[gicaz]

Added to master PRIVILEGES MANAGEMENT with commit: https://github.com/biolab-unige/xtens-app/tree/363cbbdd15e5455c398a7b1a10cf7c290a7bdbc1

TODO: client side management

[gicaz]

Handled privileges managment client-side with commit: https://github.com/biolab-unige/xtens-app/tree/c543827f7fc1314d8460624b1c74cd454518d2a2