Module development and code questions

Is there a module for 4.7 to do this? To make user created content editable by anyone? I was thinking like a never ending story kind of thing, where someone writes something, then the next person writes more, and so on. Is there a module or setting to allow (certain) pages or books to be editable by anyone?

We have modules that display most popular posts in the sidebar.
What I want is to have my main content (story,blog) to be arranged in most popular first, rather than reverse chronological order. By default it should be displayed in reverse order, but they should have an option to display it as most popular first, or even random order. which is a great way to find missed content.
plus ability to select which categories will be displayed in popular list. I don't want news category to be included for example.

I have OG. Is there some way to put a custom logo on each group home page or navigation menu? Thanks!

-ron

profanity filter?

I have this problem and I can't identify where its coming from. If you can explain this then please lend me your insight.

http://www.cctvcambridge.org/problem

In my Safari browser, the content appears to be forced way down low on the page, below the end of the sidebar content, as if the node content were too wide to fit. But here is the thing, it only happens when attaching an image.

Hi guys. I'm very enw to this and have spent alot of time just messing with customisation and finding out how things work. To get a better understanding I need to see the PHP code behind the modules that make everything work but I can't find a way of viewing this code. How can I do this??

thanks alot

Anthony