Gerrit: inline authenticationdialog.ui

Also, replace /#/settings/http-password by /#/settings/#HTTPCredentials

There should probably be some stretch between the form and
the buttonbox, but it wasn't there in the .ui so I left it
out for now.

Change-Id: Ie07a3283261a1070a489e454f9fb86c0c6dc2ca8
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/git/git.qbs

@@ -74,7 +74,6 @@ QtcPlugin {
         files: [
             "authenticationdialog.cpp",
             "authenticationdialog.h",
-            "authenticationdialog.ui",
             "branchcombobox.cpp",
             "branchcombobox.h",
             "gerritdialog.cpp",