added icon files
added icon css
transparent edit icon
add border and transparency to icons
extract icon css
add hover effect for icons
change cursor for icons
renamed device.js file to device_index.js
added device_show.js file for handling editing fields
added save_field controller
added save_field controller
StringAttribute will always store a unicode value
save_field does not have an error if the ip is the same as what it was before
updating the name or IP of a device will change the page title
added warning icon to error tooltip
added warning icon files
work on allowing CRUD for user fields