use action, not sideAction

sideAction is for things not generally related to the current action being
performed. And, it adds a newline after the side action. This was not the
right thing to use for stuff like "checksum", where doing a checksum is
part of the git annex get process, and indeed we want it to display
"(checksum...) ok"

Remote/WebDAV.hs

@@ -185,7 +185,7 @@ toDavPass = B8.fromString
  -}
 testDav :: URLString -> Maybe CredPair -> Annex ()
 testDav url (Just (u, p)) = do
-	showSideAction "testing WebDAV server"
+	showAction "testing WebDAV server"
 	test $ liftIO $ evalDAVT url $ do
 		prepDAV user pass
 		makeParentDirs