Adding range query args
local date changes
Merge branch 'master' of git://github.com/rackspace/stacktach

Conflicts:
	stacktach/views.py
local changes
Merge branch 'master' of git://github.com/rackspace/stacktach
Merge branch 'master' of git://github.com/rackspace/stacktach
Merge pull request #45 from mendeni/master

Use system time zone
Validating model has range field
Include transitions to error state
Merge pull request #46 from SandyWalsh/error_state

Error state
97 percentile and median
Merge pull request #47 from SandyWalsh/97_percent

97 percentile and median
Adding dbapi query limit and offset
Merging with master
Merge pull request #38 from ramielrowe/range_query_args

Adding range query args
Merge branch 'master' of git://github.com/rackspace/stacktach into limit_offet_args
Utility for backfilling reports
Merge pull request #49 from SandyWalsh/batch_reports

Utility for backfilling reports
Testing and refactoring stacky_server
Cutting do_kpi short if no raw's for provided tenant