Fix refresh when promoting a "ghost" field to real

Also fix refresh after deleting a sense in the browse tool.
As a bonus, stay in the same field when promoting a "ghost" field to
real.

This should finish off https://jira.sil.org/browse/WS-33.

Change-Id: Ibb5300c35e096d7e3aa15a519c14e9c7a507cc9a
Wire up Help for Linux

Wesay_Helps.chm is stored in /usr/share/wesay, we need to set this
by using CommonApplicationData.

Change-Id: Ib56da3d1665cac853a129107309eac8ecddbffd2