Merge branch 'sprint/HipsterHedgehog.feat.offline-first' into 'master'

[Sprint/HipsterHedgehog] (feat) es-feed refactor for off-line first

Closes #1079, #1080, #1081, #1078, #1070, #1072, #1074, #1058, #1007, #1006, #1011, #1012, #1019, #1020, #1021, #1022, #1023, #1024, #1025, #1026, #1027, #1029, #1030, #1031, #1032, #1034, #1033, #1039, and #1040

See merge request !242