Xmonad: C-<vol-key> combinations
Extend home crontab with convenience folders (hourly,daily,etc)

* Add convenience folders in ~/.cron.d/
  - daily
  - hourly
  - monthly
  - reebot
  - weekday
  - weekly
  - yearly

  Each of which can contain scripts to be executed at said interval.

* Add addblock update script as cronjob
Start offlineimap on login

* Start offlineimap on login
  - Add _offlineimap_ to _autostart_
  - Remove auto updating from within mu4e

* Update .offlineimaprc:
  - Check mails in intervals
  - Do quickupdates
  - Move all python code into .offlineimap.py
  - Rename gmail folders into something nicer
  - Run mail-synced script after mail syncronization
    (checks for new mails in 'Maildir/Inbox' and updates mu index.)

* Add some more aliases
Prezto update