Revert "Fixing ClassNotFoundException in JoinContactsActivity"

This reverts commit f8aaed83a9620f760b16b10d9b56a0c4a2454f66
as well as partially 4c08c999c422f84421c383d40f9315f001d593e8

I shouldn't have removed FullHeightLinearLayout. Its
functionality is still required.

Change-Id: I31ac11154feb8d33c667f29e38c076fb5e3928ae
3 files changed