New mocks: https://projects.invisionapp.com/share/KWU1X9IEB2U#/screens/399136673

Based on the user's selected hashtags, provide a list of groups from the top feeds api.

• Do not display NSFW groups
• Implement the new design
• Provide a list of groups to select based on the top feeds
• Plus icon should remove the group from an internal array
• Check icon should add the group to an internal array
• Skip should take them to the new select channels screen without saving the groups
• Continue should take them to the new select channels page and join the user to the groups
• unit tests
• e2e tests

changed milestone to %Mobile 3.15

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@juanmsolaro new mocks