[Plugin framework] Version numbers do not work

Steps to reproduce bug
1. Download and open "versionnumbers.zip"
2. Save "versionnumbers.js" to the plugins folder of MuseScore
3. Start MuseScore
4. Plugins > MuseScore Version

Expected behavior: Dialog should present the following numbers:

mscoreVersion: 010000

mscoreMajorVersion: 1
mscoreMinorVersion: 0
mscoreUpdateVersion: 0

Actual behavior: Dialog presents the following numbers

mscoreVersion: 0

mscoreMajorVersion: 0
mscoreMinorVersion: 0
mscoreUpdateVersion: 0

Discussion: For reference see: http://musescore.org/en/plugin-development/global-variables

MuseScore version: 1.0

(Operating System: Windows 7)