Merge branch 'vagrant'
Obliterate nasty modification which mangled PYTHONPATH
Remove files wrongfully introduced by a0cb9bbaa2f277553c563e555a567abe2da6ec82
We no longer need a separate wsgi app
Reduce datapoints stored for datasets

Up to now all points were stored for the barometer/temperature datasets.
Since these are measured every 5 seconds there are 17280 points per day.
This takes up a lot of space, and if already sliced for display on the
site.
Currently the datasets take 1.4 GB in the publicdb, the histograms only
360 MB.
However, there are far more histograms.
This should reduce the storage size (by factor ~30) and not affect the
display.
Add new data page for displays

Show latest data histograms and barometer data for given station.
If station does not have weather, get it from other station, closest by
number.
Resizes to fit on screen, currently expects 1280x750, need something
nicer.
Show clearly if data is older than yesterday.
Add live (current) status indicator.
Add status and auto refresh. Improve zoom and no data.

Add Nagios status indicator
Refresh page every 10 minutes if there is no activity
Improve widths/padding and zooming
Show text to show no data is available
Put test stations in separate section on overview

Stations marked as test are now in a new section ('country' test
stations)
The new section called 'Test stations' is placed as the last section
Remove some unneeded lines of code
Merge pull request #52 from HiSPARC/latest-data-page

Add 'latest' data page to show histograms,
in a way more suited for wide displays.
Ignore -999 values in barometer data

-999 imply bad or maybe missing data.
If a dataset contains only -999 values, do not save it.
Reduce datapoints stored for datasets (temp/baro)

This reduces number of points stored in the database for datasets
Closes #51
Fix shrink_dataset

variable typo ts -> x
Fix possible empty list error after filtering errors
Make nagios.py return sets of station numbers

Do not count stations with a problem as up.
Add message to announce coming downtime
Merge branch 'master' into vagrant
Kickstart config used to reinstall Pique
Pruned veewee/vagrant customizations
Fixed passwords