Houston Chronicle/AP by Becky Bohrer.  This could be a pivotal week in the debate over changing Alaska's oil tax structure, with all eyes on the Senate and whether a plan crafted late last week can garner enough votes to pass.  Here are three things to watch for this week: —OIL TAXES: Are there 11? That's the question surrounding the oil tax plan crafted by the Senate Finance Committee. The proposal will need 11 votes to pass. Debate on the plan could begin early this week on the Senate floor. The floor [...]