database admin can assemble anonymous usage statistics about vodle HOT 2 OPEN

added three couchdb list functions to calculate stats on polls, options, voters. next step: write bash scripts that use these to store the results back into the db as one central "stats" document.

from vodle.

in addition, give users the option to allow in their settings that the following anonymous aggregate usage statistics are collected:

• frequency of usage of
  • assist functionality
  • add option
• frequency of wap changes
• relative duration of live results vs no live results before last wap change
• avg. time point of last wap change as percentage of total running time, and as percentage of total "participation time" (end time minus entering time)
• avg. level of agreement at end

and later also similar things for delegation

from vodle.