Added failing test for issue
Transfer existing Jetpack sites to WPCC

When syncBlogs receives a new blog, also check on the list of Jetpack
connected sites for a match, and migrate that one

Fixes #2775
Merge branch 'feature/ProgressOnMedia' into release/4.7
Updated the logic after a user selects media to upload.
Removed __block from imageUniqueId
Merge pull request #2901 from wordpress-mobile/issue/editor-414-media-crasher

Fix for crasher after selecting media to upload
Merge pull request #2866 from wordpress-mobile/issue/2775-dont-duplicate-jetpack-blogs-4.7

Transfer existing Jetpack sites to WPCC (4.7)
Updating strings
Merge branch 'release/4.7' into develop