Stocks staged a relief rally Monday amid progress in Greece’s debt situation. But the market isn’t out of the woods. The Nasdaq jumped 1.5% after gaining the same amount Friday. It’s back above the 5000 level and its 50-day moving average. Strength in biotech and Internet stocks helped the tech-heavy index shine. The S&P 500 rallied 1.1%, closing a hair below its 50-day line and the 2100 mark. Both are potential resistance levels.