WIXBUG:4192

Guard against a null.
WIXBUG:4134

Add <UI> overrides to WixUI localization for pt-BR.
WIXBUG:3701

Add a check for file size when verifying cab cache.
Merge pull request #41 from barnson/bug.4192

Conflicts:
	History.md
Merge pull request #42 from barnson/bug.4134

Conflicts:
	History.md
Merge pull request #43 from barnson/bug.3701

Conflicts:
	History.md