feat(cron-script): remove daysMissed checks from cron as that'll be
handled with scheduler
refactor(cron-script) shuffle some task-handling to make thigns more clear
Revert "refactor(cron-script) shuffle some task-handling to make thigns more clear"

This reverts commit c110b713c32fd808c0d57cab47fb5265ac1b1f32.
fix(cron): docPoints -> dockPoints typo
refactor(cron): remove cronMatix tests from algos.mocha.coffee

Since we are moving cron to a actual cron-like script, this removes the
tests for running cron in different timezones, etc. It also removes
helpers that were solely used there. @lefnire, all tests now pass in
habitrpg-shared. Do you want me to port any others pertaining to cron?