Fix enb-stylus
Update and re-enable gemini

New gemini runs faster and fixes timeout bug, which caused previous
version to be disabled.
Fix input tests to work with master gemini

1. Mouse down replaced with click

2. Hide caret in input tests

Animated caret fails tests sometimes. This patch adds no-caret
modifier which sets text-color to transparent and uses text-shadow
to display text without a caret.
Update images

Some images have been changed while gemini was off
Use sauceconnect addon
Update screenshots