updating changelog
ditch sliding menu and holoeverywhere once and for all
Merge branch 'OnlyInAmerica-rm_holoeverywhere_slidingmenu' into secureshare

Conflicts:
	CHANGELOG.txt
Merge branch 'secureshare' of github.com:guardianproject/storymaker into secureshare

Conflicts:
	external/SecureShareLib
	external/liger