HTML code button missing from Rich Text "standard" view after 2.5 upgrade
Thanks to carlcs for pointing this out. If I edit the Standard.json file in craft/config/redactor/ as per these instructions (https://craftcms.com/help/redactor-ii-configs) it's fixed. 

I find it odd that Craft 2.5 didn't come with this Redactor config fix included, rather than letting it break and leaving it up to developers to fix it. I can understand if you had custom configs, but the default Simple and Standard configs should come fixed with the install or upgrade, no?