Merge pull request #923 from diizy/stable-1.1

Update Zyn from repo, bump version
Merge pull request #926 from diizy/stable-1.1

Fix styling of textFloat & whatsthis, make text floats consistent in sty...
LB302: Remove the non-functional Accent button from the UI, pending real implementation
Merge pull request #931 from diizy/gfx

LB302: Remove the non-functional Accent button from the UI, pending real...
SF2: Remove superfluous API call that sets period size for audio backend
We don't use any audio backend with fluidsynth, so there's no need to set a period size for it.