Improvements

[MrSpiffyClean]

After some review, the only 'object' that doesn't trigger a recount/relist of all selected countries is the 'Select Region' selectbox. This is because whenever it changes, it reverts to the 'default' selection (i.e. notable countries/locations, the 10 with most cases).
With this being said, then the whole naming scheme I had in the start of the branch becomes mute, as both select and checkboxes trigger the relist.

The idea is then as follows:

• Rename createURLFromSelect to createURLFromRegion, and have the region selectbox the only one calling this.
• Everything else calls a... createURLFromChange (renaming the previous createURLFromCheckbox)
• checkbox function parameter changed to change. The biggest issue here is communicating what exactly change is, because changing a region is also change of sorts... For the time being, I don't see a good name.