fixing blog launchers

[cberzan]

Someone broke the blog launcher. Also bin/dblog doesn't work either. Why are there dblog and iblog both in / and in bin/?

Latest master:

cberzan@lotus:~/berkeley/blog (master) $ ./blog example/burglary.blog 
[info] Loading project definition from /home/cberzan/berkeley/blog/project
[info] Set current project to blog (in build file:/home/cberzan/berkeley/blog/)
[info] Wrote /home/cberzan/berkeley/blog/target/scala-2.10/blog-0.9.1.pom
[success] Total time: 1 s, completed Jul 14, 2014 8:39:30 AM
./blog: line 49: /home/cberzan/berkeley/blog/blog/target/universal/stage/bin/blog: Not a directory

(Also for some reason it does the sbt stage every time, which is slow.)

[cberzan]

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