Fix eye-candy consistency and _lp_jobcount bug

- Eye-candy
  * Temperature and battery display now follow the same logic as the
    load display:
    if LP_PERCENTS_ALWAYS is set, the mark is not colored in order to be
      unobstrusive, and the value is colored
    else, only the mark is displayed, and is colored accordingly
  * All marks are unobstrusive. Either way they are not colored, or they
    are colored but not bold while the value they tag along is bold.
- _lp_jobcount bug
  The function now correctly detects running and stopped jobs.