[RNMobile] Merge mobile release v1.18.0 back into master#18804

Merged

maxme merged 3 commits intomasterfrom rnmobile/release-v1.18.0

Nov 29, 2019

+3-4

Commits on Nov 26, 2019

[RNMobile] Enable Spacer block (#18605 )

Gerardo Pacheco
authored and
maxme
committed

Commits on Nov 29, 2019

Fix caption alignemnt on images. (#18818 )

SergioEstevao
authored and
maxme
committed
Imagea Size: Force use original image URL when required slug does not exist

etoledom
authored and
maxme
committed