Bug 1600099: Cleanup of the webservice admin page
This patch does a few things: 1. Renames "webservice_enabled" config to "webservice_provider_enabled", to indicate that this config only controls Mahara's actions as a webservice provider, *not* a webservice client. 2. Renames all the "webservice_<protocol>_enabled" configs to "webservice_provider_<protocol>_enabled" to indicate that they only control whether Mahara will provide webservices via that protocol, and not whether Mahara will use that protocol as a client. 3. Renames "webservice_connections_enabled" config to "webservice_requester_enabled", to clarify that this config controls whether Mahara is allowed to request webservices from external sources. 4. Updates language strings to make these changes clearer. 5. Rearranges and renames the form methods in webservice/admin/index.php to make the flow of control more obvious. Now the main form method is first, followed in order by the methods that generate its subforms and each of their submit hand...