WASHINGTON — Fresh from shackling the traditional blocking ability of the Senate’s minority party, Democrats are ready to muscle through President Barack Obama’s nominees for pivotal judgeships and other top jobs. Despite last month’s Democratic power play, Senate Republicans retain the power to slow, though not derail, Obama’s appointments. Left unchanged were other rules that the out-of-power party could use to grind the chamber’s work to an excruciating crawl. That ranges from …