Merge branch 't5_edit' into t6_widget

Conflicts:
	apps/about/tests.py
ticket:6 fix ajax
ticket:6 fix templates
ticket:6 pep8
Merge branch 't6_widget' into t8_tag

Conflicts:
	apps/about/tests.py
	apps/about/views.py
	templates/about/about_list.html
ticket:8 pep8
Merge branch 't8_tag' into t9_command
ticket:9 fixes, optimizations
Merge branch 't9_command' into t10_signal

Conflicts:
	apps/about/tests.py
ticket:10 refactoring
Merge branch 't10_signal' into t13_customer

Conflicts:
	apps/about/tests.py
iticket:13 pep8
Merge branch 't13_customer'