Merge pull request #571 from edx-solutions/hash_update/group_project_v2

Hash Update: Group Project v2 and XBlock (dependent version)

requirements/edx/custom.txt

@@ -11,6 +11,6 @@
 -e git+https://github.com/open-craft/xblock-poll.git@bd93e4851c15d9cb1522e692f8b692cf584d23b1#egg=xblock-poll
 -e git+https://github.com/edx/edx-notifications.git@275b8354593048ecae3e06642985b702b81140cc#egg=edx-notifications
 -e git+https://github.com/open-craft/problem-builder.git@37d5d42668449ccea87da2774161648024faea04#egg=problem-builder
--e git+https://github.com/open-craft/xblock-group-project-v2.git@5def44042200be7a07383deee21c3640aea32cd9#egg=xblock-group-project-v2
+-e git+https://github.com/open-craft/xblock-group-project-v2.git@ca6dfe39b4ed73a7076990b5b31ed27f74603a63#egg=xblock-group-project-v2
 -e git+https://github.com/OfficeDev/xblock-officemix.git@86238f5968a08db005717dbddc346808f1ed3716#egg=xblock-officemix
--e git+https://github.com/edx-solutions/xblock.git@80d11e883cb0f4b554e1e566294cb7de383cffed#egg=xblock
+-e git+https://github.com/edx-solutions/xblock.git@1d0deab761bb3bf82bfb0116b91b5444a1bdacda#egg=xblock