update links after org switch

[jGaboardi]

We need to comb there everything and update the links following the organization change.

• [x] README
• [x] docs/conf
• [x] docs/index
• [x] docs/installation
• [x] tools/gitcount.ipynb
• [x] setup.py

[jGaboardi]

Needs attention:

• [x] commviz.py line 144
• [x] quilt URL in 01_getting_started.ipynb
• [x] docs/data.rst line 6 and line 13
• [x] ... there seems to be quite a few. Search for:
  • spatialucr
  • spatial.ucr
  • spatial-ucr
  • ...?

[knaaptime]

i think the whole commviz file needs to be removed anyway

[knaaptime]

the quilt urls will remain unchanged

[knaaptime]

i think i've caught them all, but reopen if we find a lingering culprit