Optimizing icons

Icons reviewed:
edit, restore-parent, trash, archive-restore, subscript, lock, fields, content-list, upload, download, bubbles, list-numbered, list, options, align-left, align-right, align-center, align-justify, portfolio, versions, h1, h3, drag.

Icons added:
back, lock-unlocked, core, b2b, cart, cart-upload, cart-wishlist, customer, order-management, mail, rate-review, erp, slider, slider-lastviewed, components, newsletter, about-info, settings-config, logout, profile, h2, h3, h4, h5, h6, bestseller, server, languages-add, custom_tags, twitter, bookmark, bookmark-active, bookmark-manager, layout-switch.