Update bower.json for main sector

Main sector has a wrong value configured to "lib/simditor.min.js", but that file doesn't exist!
So, better to update it to "lib/simditor.js", to make sure auto dependencies working for some plugins such as grunt-wiredep.

Minified process can be taken care by other grunt tasks.
Merge pull request #131 from realdah/master

Update bower.json for main sector