[fractal] Use stable API endpoints

[Alexandre Franke <afranke src gnome org>]

commit 9e98846c734e3fb538f2ffab5e5703a61f33530b
Author: Alejandro Domínguez <adomu net-c com>
Date:   Sat Jan 12 17:27:56 2019 +0100

    Use stable API endpoints

 fractal-matrix-api/src/backend/directory.rs | 2 +-
 fractal-matrix-api/src/backend/user.rs      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/fractal-matrix-api/src/backend/directory.rs b/fractal-matrix-api/src/backend/directory.rs
index 1b535b6c..30bf4131 100644
--- a/fractal-matrix-api/src/backend/directory.rs
+++ b/fractal-matrix-api/src/backend/directory.rs
@@ -21,7 +21,7 @@ pub fn protocols(bk: &Backend) {
     let baseu = bk.get_base_url();
     let tk = bk.data.lock().unwrap().access_token.clone();
     let mut url = baseu
-        .join("/_matrix/client/unstable/thirdparty/protocols")
+        .join("/_matrix/client/r0/thirdparty/protocols")
         .expect("Wrong URL in protocols()");
     url.query_pairs_mut()
         .clear()
diff --git a/fractal-matrix-api/src/backend/user.rs b/fractal-matrix-api/src/backend/user.rs
index 8471b707..fe02fe01 100644
--- a/fractal-matrix-api/src/backend/user.rs
+++ b/fractal-matrix-api/src/backend/user.rs
@@ -256,7 +256,7 @@ pub fn delete_three_pid(bk: &Backend, medium: &str, address: &str) {
     let baseu = bk.get_base_url();
     let tk = bk.data.lock().unwrap().access_token.clone();
     let mut url = baseu
-        .join("/_matrix/client/unstable/account/3pid/delete")
+        .join("/_matrix/client/r0/account/3pid/delete")
         .expect("Wrong URL in delete_three_pid()");
     url.query_pairs_mut()
         .clear()