[ADD] Enable access to workflow engine in server actions that run arbitrary python code
(a workflow variable gives now access to trg_* methods of the workflow engine)
[ADD] Test that the variable 'workflow' is correctly assigned in Python server actions (if not, the code will crash)
[MERGE] [IMP] ir_actions: allow using workflows in server actions.
[IMP] filter out phantomjs warning on OSX
[FIX] httpd thread must be a daemon threaded
[FIX] return code is non-zero if any preloaded database failed to load
[FIX] correct run of test-file via command line
[FIX] correct signal handler on nt
[IMP] openerp/service/server.py: lint file
[FIX] damn! correct import