Hide line markers only in IE10, keep them in IE9

[#58737286]

That was the original intention, but the test was broken.
Fix layout of "Pressure Equilibrium" interactive (SAM version)

[#58382216]
update travis config: build pull requests
fixing liquide interactive water water model and tweaks

[#54874264]
fix divergence and tweak syringe interactive

[#57165522]
Merge branch 'master' into pixijs-rendering

Conflicts:
	.travis.yml