enable deleted status for assets
This gives the ability to delete assets, much the same way as deleting
tickets in RT.
Added callbacks to ShowSummary
Add/update callbacks in Display.html
load AT stylesheet when using aileron and ballard
new callback style
update old ColumnMaps
fixes a problem where __WebPath__ does not get substituted correctly
eliminate some warnings
Allow customization of title on Asset/Display.html
Modeled on RT's Ticket/Display.html
exact copy of RT function
remove fields handled by /Elements/ColumnMap
Change "style" column key to "export_style"
because "style" is used for CSS styling by CollectionList element
ATMaybeRedirectForResults is unchanged from the RT version, use that instead
Show the correct txn link in asset histories
Cleanup and update Grid.html
Now uses CollectionList, fields are changed to input elements by callback
Specify Type Id or Global when loading Asset CFs, since Ticket CFs could have the same name.
Add REST interface
Use correct lookuptype for assets
Merge pull request #37 from btb/base-css

load AT styles when using aileron and ballard stylesheets
Merge pull request #38 from btb/columnmap

update old ColumnMaps
Merge pull request #39 from btb/gridupdate

Cleanup and update Grid.html