Multiple stuff on a rainy sunday

Overall fixes
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* minor css fixes
* add bower for dependency management, fix requirejs configs accordingly
* update backbone to 1.1.1 with native amd support - nice.
* update underscore, remove lodash

iOS7 fixes
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* add apple touch icons for ios homescreen webapps
* minor UI fixes for ios7 based on:
 http://mir.aculo.us/2013/09/16/how-to-create-a-web-app-that-looks-like-a-ios7-native-app-part-1/