Improved documentation of Societe and started type hinting variables
Typehinting $user variable
Corrected Database.interface::fetch_object doc
Corrected Database.interface doc
Corrected Translate::getLabelFromKey doc
Defined missing used variables of the class and removed unused local vars
Documenting variables
Merge pull request #1567 from marcosgdf/doc

Improved documentation of Societe and started type hinting variables