Changed list datasets page to refresh every 30sec.
Updated to match the current v71 data release of the ensembl DB.  Connection Prop updated to use local Ensembl DB should provide nice speedup.
Updated to move string contstruction away from + and uses StringBuilder.append()  Should be faster in longer for loops that construct large strings.
removed some of the excessive debuging print statements.
Merge branch 'hotfix/various_bug_enhancements'