Merge branch 't3_requests'
ticket:4 tests
test4: implementation
Merge branch 't4_context_processor'
ticket:5 tests
ticket:5 implementation
Merge branch 't5_edit_page'
ticket:5 hotfix with login template
ticket:5 another hotfix with templates
ticket:6 tests
ticket:6 implementation
Merge branch 't6_form_widgets'
Merge branch 'master' into t3_requests
ticket:3 corrections