Cosmetic changes, enable spec chars in isValidEntry

Checking of valid entries in input boxes now allows usage of
!@#$%^&*(),. characters, in areas such as Add/Edit Item amd Manage
Products/Devices
Fixed bug for skipping authentication check if the user cancels input of
transferee's password when transferring items in Manage Inventory
Changed sizes of ListViews in Item History, All Item Search, Main
Inventory Screen