device logs data source
adding device log indicators to aggregate tables
aggregate device logs by domain,user_id, month.index, log_type before collecting otherwise we run out of memory
sum monthly log counts for lifetime table
add user_pk to aggregate tables, fix get_data_source bug when limit is -1
Merge pull request #16 from dimagi/rdayalu-analysis

moving analysis scripts into one folder
remove conversion of NA user_ids to 'NONE', no longer needed
Merge branch 'master' of https://github.com/dimagi/dimagi-data-platform-R
:wq
Merge branch 'master' of https://github.com/dimagi/dimagi-data-platform-R into rdayalu-analysis
Minor indicator changes and data blog dataset creation.