iOS - Vendor My Products Add/Edit Developments

[alcanunsal]

VendorMyProductsViewController and VendorAddEditProductsViewContoller is completed with the following properties:

• vendors can add a new product or edit their existing products' information
• vendors can see the list of all of their products

In addition, a few adjustments are made in MainViewController in order to prevent UI blocking while API calls and some product image confusion bugs are fixed in SearchResultsViewController.

[bestegoger]

Looks ready to merge. Thanks!