Align esp idf nov2018#48

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FredrikFornstad wants to merge 2 commits intowarmcat:masterfrom

FredrikFornstad:align_esp-idf_nov2018

Commits on Nov 4, 2018

Align with new esp-idf bootloader
FredrikFornstad
committed

Commits on Nov 5, 2018

Added esp_event to Makefile paths
FredrikFornstad
committed