Magento website Fixations - Mix -- 2

1. Fix error: when sign up or edit account info, it is doesnt save the country of residence 2. When add new address from address page, to be saved as shipping address, not billing address, and all fields to be empty, except country 3. Fix errors appear during search, including errors appear if you filter on search results, like attachment, and the error that if I search for a word, and search for another word from search results page it doesn’t work. 4. city field and state field not to allow any kind or writing inside it, only to accept selection from droplist (in new and edit address page, and in checkout page)