PreBuild: Minor fix.
Merge pull request #574 from am11/master

PreBuild: Minor fix
Bundle: Incorrect parameters passed.
* Rename parameter to avoid confusion.
Zencoding: Updated to v1.2.0.
Merge pull request #576 from am11/master

Bundle: Incorrect parameters passed
CSS:  url() function crash. Fixed #580
Commands: Make CommandTargetBase generic

Get the group GUID from the enum type.
This helps avoid casting, and ensures
that command groups always match.
Tests: Try sending TYPECHAR commands

Doesn't work yet
Tests: Fix keystroke injection

Test still doesn't pass; WE command target isn't registering.
Tests: Only inject keystrokes on ApplicationIdle

Wait for targets to be registered
Tests: Port ZenCoding to use VSHost.TypeString()

Tests are now more reliable.