Fix #2879 (Check-Icons)

IE11 shows checkmark in wierd position. It seems that IE does size the "checkmark" differently than firefox, which make them appear to be more to the right and bottom. I'm using glyphicons to fix that. The look is constistent in different browser. Though its kind of thicker than the original was.
Merge pull request #4321 from sbreiler/develop

Fix #2879 (Check-Icons)
fix(style): help emoji line up with task text

Adds a `vertical-align` property to `span.emoji` so adding an emoji to a task doesn't cause it to bounce out of alignment with the rest of the task's text.
refactor(paypal): some plan debugging cleanup
Moved time travelers and hourglass strings to shared
Converted strings to be able to use links
Corrected strings so they only use one variable