Merge pull request #20605 from jmcanterafonseca/fix_sim_dups_final

Bug 1026369 - In import, contacts are duplicated.
Merge pull request #20801 from jmcanterafonseca/fix_sim_dups_another

Bug 1028106 - Invalid information of automated merged contacts and conta...
Merge pull request #21068 from KevinGrandon/bug_1030704_collection_divider

Bug 1030704 - [Collection app] Divider under pinned apps hidden
Merge pull request #21080 from KevinGrandon/bug_1030713_search_subdomain_dedupe

Bug 1030713 - [Collection app] Web results get wrongfully deduped