Add quickselect algorithm. Quickselect is a selection algorithm to find the kth smallest element in an unordered list.

Currently the layer cannot be selected for low zoom levels.

Because the checking of current time is incapsulated in the thing that the test is testing, the test needs to do at least a copule tests that rely on the current time. The test was made to be robust to different times of day but there is a bug in the test where a certain time of day (the last several minutes before the hour i think) which causes the test to fail. we should fix that because it caus