[IMP] web: allow manifest files to contain remote js/css/qweb files
[FIX] corelib.js: use this instead of self
[FIX] FieldMany2One: avoid displaying a crash when name_getting an invisible many2one due to an always_reload.
[FIX] image controller: all reads (event __last_update) should be encapsulated into a try/catch to avoid having sometimes a placeholder, sometimes a broken image + traceback.
[FIX] FieldMany2One: always_reload option should not prevent from
displaying the field original value that is a valid name_get. The always_reload
perform an additional name_get that may crash due to access rights. Keeping the
original value (coming from the fields view get) in a backup variable allows
to fall back on this value when having issues with access rights.