Issue #2322105 by rpayanm, prics, Upchuk, Temoor, seanB, pcambra, jamesdixon: Replace all instances of taxonomy_vocabulary_load(), taxonomy_vocabulary_load_multiple(), entity_load('taxonomy_vocabulary') and entity_load_multiple('taxonomy_vocabulary') with static method calls

Issue #2358991 by JeroenT, ianthomas_uk, rpayanm, jamesdixon, er.pushpinderrana, Ashok Negi: Remove usage of drupal_mail()

Issue #2288793 by YesCT, jamesdixon, xq1003, fran seva, Les Lim: Add missing and fix some types in core docblocks and add some typehinting for locale module.