Lizard-map

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- Bugfix data attributes lizard-map-wms. Moved divs from above-content
to content.

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- Make 'now' line orange.

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- Added more tests (test coverage now at 62%).

- Various UI and javascript fixes.

- Showing aggregation period data in the statistics table.

- Moved javascript out of map template into a separate javascript file: this
way the javascript can be tested automatically (and it is!).

- "Sleep items hierheen" and "Nog geen grafieken" are not draggable anymore.

- Add restrict-to-month option.

- Percentile in collage screen is now user adjustable.

- Move legend code to template tag. Add custom legend modification possibility.

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- Add never_cache to several server requests, to prevent caching in IE.

- Fixed graph popup rendering problem for IE7 (empty <a> tags get hidden
there, even if there's an icon background).

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- Use updated krw shapefiile.

- Use different open street map.

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- Bugfix for when no statistics are available.