PORTFOLIO: If you want more proof that selling legal pot is a booming business, consider this statistic: Denver has more medical-marijuana shops than Starbucks Corp. locations. Denver’s City Treasurer Steve Ellington tells ABC New affiliate Channel 7 that at least 390 pot dispensaries applied for a sales-tax license recently. That compares to 208 Starbucks in the entire state of Colorado, the station reports. Denver’s city council took a step toward regulating the marijuana stores last night, and the businesses are filing their tax applications. The Denver statistic sheds light on a business that is becoming more institutionalized as local governments […]