css for offer-details tab with item's details
sort item-messages and general-messages with current timestamp
fixed warnings
refactored offer-details view
display unread-icon in offer-details tab
add Accepted and Not needed status badge on item-image
update helper to display-message-time
fixed warnings
test cases for offer-details page
translations for offer-details page
Merge pull request #52 from crossroads/offer-tabs

Offer Details Tab