In the closing week of a legislative session, lawmakers usually take up important topics: Crime, roads, taxes. Dandelions. So it was in the Senate Ways and Means Committee last week, as the panel in charge of deciding taxes and spending for at least $43 billion in state programs and salaries for the next two years decided to dive into an issue apparently weighing heavily on the minds of some Republican members. The Capitol grounds, they said, were in shabby shape.