Web floorplan fixes

Generic_Item.pm was changed recently and broke the floorplan web view so I finally fixed that.  Plus I have had other local changes to fix the icons for quite some time.  This adds both those changes
![screenshot from 2014-12-13 13 06 45](https://cloud.githubusercontent.com/assets/10178869/5424934/05f6ec4e-82c9-11e4-995b-f273a7423f6b.png)