Installer fixes needed for FW8.1.0

Completes the EC Converters upgrade from Bob Eaton (LT-15663)
Removed some extra Paratext files that are not yet relevant. (LT-15654)
Changed to use .X.manifest to solve XP installation. (Damien)

Change-Id: I106dee4243e4e1a78433ae53075add0dd1e8e243
Disabled default localizations

4 localizations: ko, ro, tr, and vi were being installed by default.
Changed the level so the user needs to select them before they will
be installed, making them like all other localizations.

Change-Id: I711222aa47619cebde847aa2ff77be361bb687c0
Fix missing cab files

Embedded ko, ro, tr, and vi cab files into msi file so it would
install these localizations.

Change-Id: I0d3afcd1c1fccb50593415a1a20cff21b67fb527
Merge branch 'release/8.1' into develop