EZP-22110: Display Place List

Link: https://jira.ez.no/browse/EZP-22110

## Description
This new page lists place_list elements using default sort filter. When clicking on a sorting button it asks for the permission to use the browser's geolocation feature to refresh the list (using ajax) by proximity.

## Test
Manual test

## Requires
https://github.com/ezsystems/ezpublish-community/pull/106

## Screenshot
![place_list](https://f.cloud.github.com/assets/4035241/2168713/a630b3e0-9547-11e3-8c92-d65039de1365.png)


## TODOs
- [x] Refactor JS
- [x] Finish HTML and CSS
- [x] Rebase commits