Don't hide Commit tab in Web IDE when there are no changes yet
Description
Currently we only show the Commit tab in the left sidebar of the Web IDE when there already are changes that have been made by the user. This is a UX pattern that should usually be avoided as it's not obvious to the user why that element is not visible.
Proposal
Instead we should always show the Commit tab and disable the Commit button in case there are no changes yet, the same way we do it in the Edit tab.