Errors in gruntfile

I ran into some issues trying to run the build proccess.

1- When running the `concat.dist` and `concat.basic` tasks, the files `src/iris.js` and  `src/iris-basic.js` were not propery compiled due to the stray `>` in the filename
2- The uglify task created the minified scripts from the concatenated scripts. However the uglify task was run before the concat task. Running `grunt` once would create empty minified files. (running twice - created it OK)