Added uniqueness constraint for project/version Fixed buggy get_release method
Added uniqueness constraint for project/version
Fixed buggy get_release method

disqus/djangopypi,hsmade/djangopypi2,pitrho/djangopypi2,popen2/djangopypi2,mattcaldwell/djangopypi,ask/chishop,pitrho/djangopypi2,EightMedia/djangopypi,popen2/djangopypi2,disqus/djangopypi,EightMedia/djangopypi,hsmade/djangopypi2,benliles/djangopypi