og 7.x-2.0-rc4

Changes since 7.x-2.0-rc3:

• #1884874 by svilleintel: Added MigrateDestinationOGMembership prepare() and complete() calls missing.
• #1905802 by spotzero: Fixed Views relationships from an og_membership() to an entity join incorrectly if multiple entity types are groups.
• #1865944 by bulldozer2003: Use the field's gids rather than user gids for 'other groups' checking. This allows altering the group-audience selection.
• #1911726 by balagan: Fixed The name of the contextual filter in the view og_user_group() displays escaped.
• Fix wrong logic in og_features_pipe_alter().
• #1901976 by Blackice2999 | dready2011: Fixed notice if item map doesn't exist in og_context_handler_node().
• #1905570 by Simon Georges: Fixed Typo in 'OG settings screen'.
• #1904622 by spotzero: Fixed Views relationship to og_membership() join on incorrectly data if multiple entity types are groups.