补充controller，修改变量，主页bug修改

liangxiaozhen

2023-08-11 af908216bb0012fe849e3b49b3039c7ba238f8f0

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<apex:page id="communitiesLandingPage" controller="CommunitiesLandingController" action="{!forwardToStartPage}" title="{!$Label.site.site_login}" lightningStylesheets="true">
</apex:page>