Merge branch 't9_print_command'
ticket:10 added empty signal processors
ticket:10 added OperationLog model
ticket:10 model added to admin site
ticket:10 added tests
ticket:10 added implementation
ticket:10 code moved to be a new app
ticket:10 PEP8 cleanup
Merge branch 't10_signal_processor'
ticket: 13 added priority field to the model
ticket:13 priority can be updated on requests page
ticket:13 added priority update with ajax
ticket:13 tests updated
ticket:13 cleanup
Merge branch 't13_requests_priority'
Merge branch 'master' into t9_print_command