anchor.diff:                      ButtonIcon = auth_config:get_provider_button_icon(Provider),
                       ButtonColor = auth_config:get_provider_button_color(Provider),
                       HandlerModule = auth_config:get_provider_module(Provider),
  -                    #link{class = <<"btn btn-small">>, postback = {auth, HandlerModule, Referer},
  +                    #link{id = <<"login_", (atom_to_binary(Provider, latin1))/binary>>, class = <<"btn btn-small">>, postback = {auth, HandlerModule, Referer},
                           style = <<"margin: 10px; text-align: left; width: 200px; background-color: ", ButtonColor/binary>>,
                           body = [
                               #span{style = <<"display: inline-block; line-height: 32px;">>, body = [
  
positive.code:     {ok, URL} = HandlerModule:get_redirect_url(false),
      gui_jq:redirect(URL);
  
  event(read_about_provider) ->
      gui_jq:replace(<<"main_panel">>, about_provider());
  
  event(back_to_homepage) ->
      gui_jq:replace(<<"main_panel">>, login_panel()).
  
  
negative.code:                     #hr{style = <<"border-color: #E0EAEB;">>},
                      #h3{style = <<"margin-top: 35px;">>, body = <<"Become a provider">>},
                      #p{class = <<"login-info">>, body = <<"Deploy our system on your servers to be a part of <strong>onedata</strong>.">>},
                      #link{id = <<"to_provider">>, class = <<"btn btn-success">>, postback = {toggle_page, provider},
                          style = <<"margin: 10px 10px 25px; text-align: center; width: 446px;">>,
                          body = [
                              <<"Read more">>,
                              <<"<i class=\"fui-arrow-right pull-right\"></i>">>
                          ]}
                  ]},
                  gui_utils:cookie_policy_popup_body(<<?privacy_policy_url>>)
              ] ++ gr_gui_utils:logotype_footer(120)}
  