Adding sandbox d3js version based on a small sample of data

Change-Id: Id2679ede5d7c9c4499d912ddd862ae8fd8fbf7e5
Splitting data by TA/RA pairs.

(Dumb quick implementation, not scalable.)

Change-Id: Ib77591b3d6a10d5911d2e22967ea5a389d65acc7
Merge "Minor fixes to copyright notice and pylint."
Use d3js visualization instead of afterquery.

For that:
  * cache json representation of the packets of a given file
  * cache pairs (TA;RA)

Next step(s):
  * apply filter (show) to pairs
  * apply aliases to addresses

Additional info:
  $ gjslint --additional_extensions html d3viz.html
  1 files checked, no errors found.

Change-Id: I62484854d74ee88efb6f4fae5eec7f19a7a78427
Gradual improvements:
  * More than one plot (any field vs. secs)
  * Add crosshairs

Change-Id: I811aa79930e2ba224cbf2ec560eb1907cdd90c4c
RELNOTES: Level up the version.

Plus-one the version before deploying the current alpha'ish state
(d3.js-based visualization) so that to keep the afterquery-based version
around in the easy access.

Change-Id: Ifbcc5599d9f1199a5b4c54217419b69bfc36657f