modified install regex to detect versions suffixed with "RC"
removed old line
Merge pull request #962 from tjwebb/installer-fix-4.2.0RC

Installer fix 4.2.0 rc
Merge remote-tracking branch 'xtuple/master'
	modified:   enyo-client/application/source/models/vendor.js
	modified:   enyo-client/database/source/xm/javascript/system.sql
	modified:   lib/enyo-x/source/less/list.less
	modified:   lib/enyo-x/source/stylesheets/screen.css
	enyo-client/application/source/models/bank_account.js
	enyo-client/application/source/models/invoice.js
	enyo-client/application/source/models/reason_code.js
	enyo-client/database/orm/models/bank_account.json
	enyo-client/database/orm/models/invoice.json
	enyo-client/database/orm/models/reason_code.json
	enyo-client/database/source/public/tables/invcitem.sql
	enyo-client/database/source/public/tables/invcitemtax.sql
        enyo-client/database/source/xt/views/invcheadinfo.sql
	enyo-client/database/source/xt/views/invciteminfo.sql
	enyo-client/database/source/xt/views/invcitemtaxinfo.sql
	enyo-client/extensions/source/billing/
	lib/backbone-x/source/view.js
	lib/enyo-x/source/less/model-decorator.less