fix vehicle search
Merge pull request #70 from irshad89/master

fix vehicle search
migration for vehicle end of life
enable menu for TEB list
fixes for maintenance index and edit
description in models, maintenance calculates totals, Maintenance Type dropdown exists
vehicle maintenance costs
chartkick for vehicle history
fix extra bracket
fix export excel
Merge pull request #71 from irshad89/master

fix export excel
fixed error when calculating line items with quantity more thane one
tidy up vehicles index
fix issued by for contracts
fix vehicle search
Merge pull request #73 from irshad89/master

fix vehicle search
merge application.css, _vehicles.html.haml, vehicles/index.html.haml, schema.rb