adding to popularity only when retweet
exlipcitly returning map to Weekly Summeries
when creating new date entry in the map, copying all data from the one
bellow
added copy c'tors for the copying when adding new date entry to the
histogram maps
small new test
working with a list of stremaers and strings. 
guice injection was updated
* new c'tor
* removed unneccessary getters. now return a list of the maps
* maps are ordered by constants when reading (c'tor) and writing
* some null exceptions were ordered to return empty objects
* null exceptions now fixed -> returning empty objects
* c'tor was added to support starting with a give list
working now with all the new streamer (that gets a list) and the new
dictionary
changed the imports to import the right exception types (from the new
classes)
sent all the unused files to old package as a backup for meanwhile
moved the tests to be organized the same as code. re organized imports
now the streamer saves a list of maps and not dictionarey