add to admin/report menu vqmod script
vqmod script updated for any language.
export_xls model updated for multilanguage situation.

( avoid duplicate entry in lists if multi languages are used.
all common files removed. use vqmod script instead.
readme updated for vqmod requirement.
export_xls model updated for multilanguage situation.

( avoid duplicate entries in lists if multi languages are used.
all common files removed. use vqmod script instead.
Merge pull request #1 from dancetools/master

added vqmod script for common files install... + fix sql in model for multi Language situation.