Add function to get parameters from querystring

See
http://stackoverflow.com/questions/901115/how-can-i-get-query-string-val
ues
Get required parameters from querystring
Overwrite default TorqueOptions with querystring parameters
Add parameter steps

The UI responds better to a string than a UI: it will show a regular
textbox, without slider.
Decided to parseInt(steps)

This leads to better UI results within the range of 10-750. For values
above 750, the bar will extend, but not beyond the borders of the
control panel.
Add resolution parameter

Select menu in UI will be empty for resolutions that do not fit in the
steps 1, 2, 4, 8, 16, 32.
Add cumulative parameter
Add clock parameter

Set default to true
Add parameters fps, fitbounds, blendmode, trails, point_type and cellsize

Add comment on values that are not checked
Reorder code and change some if/else logic
Merge pull request #2 from LifeWatchINBO/querystring

Add querystring functionality