Use shared protected branches views for CE-partials

...iews/projects/protected_branches/_branches_list.html.haml

...cts/protected_branches/_create_protected_branch.html.haml

app/views/projects/protected_branches/_index.html.haml

...s/projects/protected_branches/_protected_branch.html.haml

...ojects/protected_branches/shared/_branches_list.html.haml

...tected_branches/shared/_create_protected_branch.html.haml

...ws/projects/protected_branches/shared/_dropdown.html.haml

...views/projects/protected_branches/shared/_index.html.haml

...ects/protected_branches/shared/_matching_branch.html.haml

...cts/protected_branches/shared/_protected_branch.html.haml

app/views/projects/protected_branches/show.html.haml

app/views/projects/settings/repository/show.html.haml