Rest call overview

Added a rest call overview to display all available calls in the DB
<a href='#crh-start'></a><a href='#crh-data-%7B%22processed%22%3A%20%5B%22https%3A//github.com/EnoF/con-rest/pull/23%23discussion_r21143631%22%5D%2C%20%22comments%22%3A%20%7B%22Pull%2051a748d51add2c9d99ba25b70e6ac4a55043d39b%20app/widgets/restCallOverview/restCallOverview.js%205%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/EnoF/con-rest/pull/23%23discussion_r21143631%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22Please%20convert%20all%20tabs%20to%20whitespaces.%20I%20guess%20your%20IDE%20isn%27t%20setup%20correctly%2C%20you%20should%20have%20a%20default%20setting%20for%20this.%22%2C%20%22created_at%22%3A%20%222014-12-02T07%3A39%3A53Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/1508400%3Fv%3D3%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/EnoF%22%7D%7D%5D%2C%20%22title%22%3A%20%22File%3A%20app/widgets/restCallOverview/restCallOverview.js%3AL1-21%22%7D%7D%7D'></a>
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- [ ] <a href='#crh-comment-Pull 51a748d51add2c9d99ba25b70e6ac4a55043d39b app/widgets/restCallOverview/restCallOverview.js 5'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/EnoF/con-rest/pull/23#discussion_r21143631'>File: app/widgets/restCallOverview/restCallOverview.js:L1-21</a></b>
- <a href='https://github.com/EnoF'><img border=0 src='https://avatars.githubusercontent.com/u/1508400?v=3' height=16 width=16'></a> Please convert all tabs to whitespaces. I guess your IDE isn't setup correctly, you should have a default setting for this.


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Also here, please convert it to spaces.