add order filter to processes graph
add new filtered processes graph to order_schedule and project_wip
fix bug in event.save update_summary and test_event_saving
add Pillow dependencies note to install doc
set maxlength on new pattern name input
tinker with graph node y setting
make user optional in agent user creation page
freeze/unfreeze nodes in processes graph
add another layer to projects
add another layer to projects
show source exchanges on resource page as well as processes
fix bug in contributions report
use resource type rate when computing roles and stats charts
fix bug in projects indentation
add event_type to CachedEventSummary
and use to select only work events for project stats and roles charts
Started work on agent page.  Renumbered migrations from 10 on.  (Noting that migrations 11, 13, 15 are missing from the git scan.  Added in bash before running this.)
Merge branch 'agent' of https://github.com/valnet/valuenetwork.git into agent

Conflicts:
	valuenetwork/valueaccounting/views.py
Merge branch 'master' of https://github.com/valnet/valuenetwork.git into agent

Conflicts:
	valuenetwork/valueaccounting/models.py
	valuenetwork/valueaccounting/tests/test_event_saving.py