Business Trends: Commercial Real Estate rnrnThe Construction Confidence Index released by the Associated Builders and Contractors in August revealed that the first quarter of this year showed promise, thanks to nationwide progress in commercial construction sales prospects, staffing levels and profits. By the second quarter, however, all three of those measurements declined, dashing hopes for a quick industry rebound. Analysts and industry executives still believe construction spending will increase, but growth will be slower and more gradual than originally anticipated.rnrnThe uncertainty of the economy, with concerns ranging from volatile energy prices to tax increases and federal spending cuts, has a major impact on the construction industry. “Until we get some level of comfort where federal finances are headed