IOS – Left third of iPad screen is blocked with bookmarks column

I would nope and nope, at least without jailbreaking.

You can only create bookmark one by one and name them as you want.

Once they are created, the only way to rename them is to create a new one and delete the old one.

Jailbreaking allows to rename any apps, so I think web apps, too. I'm not sure about editing home screen web apps.

Unfortunately you have to turn it on and then it will let you change it. I'll have a look tomorrow to see if there is a preference file that can easily be changed to skip having to sync with IE.