Deprecated items that should be removed prior to v4 of web-framework

* urldecode_and_verify_array() -> decode_and_verify_array()
* urlencode_and_auth_array() -> encode_and_auth_array()

Actions to take to migrate from v1/v2 to v3 of web-framework

* Remove RewriteCond page and don't add page parameter to index.php
* Remove SITE_NAME and MAIL_ADDRESS from site_defines.inc.php
* There are no return values for update_field(), update(), increase_field(), decrease_field()
* $global_info is not needed in constructors and static DataCore functions anymore
* $this->database->Query() -> $this->query()
* Migrate core_object functions to static DataCore equivalents
* send_404() -> $this->exit_send_404()
* verify() -> $this->verify() or WF::verify()
* No more $global_config, use $this->get_config() or WF::get_config()
* WF:: before $includes, $site_includes and $views
* add_message_to_url() -> $this->get_message_for_url()
* add_blacklist_entry() -> $this->add_blacklist_entry()
* encode_and_auth_array() -> $this->encode_and_auth_array()
* decode_and_verify_array() -> $this->decode_and_verify_array()
* $this->check_required() -> $this->get_input_var('xyz', true)
* $this->state['messages'] => $this->get_messages()
* $this->state['user_id'] => $this->get_authenticated('user_id')
* $this->state['username'] => $this->get_authenticated('username')
* $this->state['user'] => $this->get_authenticated()['user']
* $this->state['input'] => $this->get_input_var()
* get_crsf_token() to $this->get_csrf_token()
* Routes from register_routes() to individual $framework->register_route()

