You can go ahead in time but not backwards at all. Time warping is a touchy process, you can really hose up the internal timers in the game when you set it back to normal as well.
A runner is a viller who has running as their likes in the details screen. They are the best kind they can get everything done twice as fast as every villager. Rare but fun when you get one.
When there is nothing to build drop a builder on your huts, their status will say fixing huts and it will increase their building skill, once they have one notch of building if you tick it they will continue to repair huts to gain more skill.
Detail screen is not blurry on mine, nor have i heard of it being that way on anyone elses. Could you post a screenshot of what you mean for us to see?
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Village Monk
"There's no place like 127.0.0.1"