Add Ability to Manage Exercises Online (in browser)

It would be great to manage exercises online, i.e. creating new ones, editing, renaming, etc. I find that I want different versions depending on which gym I'm in because machines are different, and even the "same" machines aren't the same regarding the weight marked on the stack. I know it can be done in the app but it would be easier to make lots of changes in a web browser.