fix #223 annotations break with infinite scroll

* change .click() to .live() to attach the event for
future annotations as well
* When appending new annotations to page, add them
to annotaion_objects array
Django 1.6.3 security release
replace deprecated .live with .on
Swich to PickleSerializer for sessions
Merge pull request #226 from mlitbk/annotationbug

fix #223 annotations break with infinite scroll
Merge pull request #5 from hasadna/master

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