[fractal] Fix strings:

[Daniel Garcia Moreno <danigm src gnome org>]

commit c157b76f500f804f4f14119a7baac03ac0c7a42d
Author: Pavel Elizaryev <gonleef tuta io>
Date:   Mon Jan 14 22:29:55 2019 +0500

    Fix strings:
    
    "Save as" should probably be "Save as…"
    "You’ve been invited to join to "… → "to join", not "to join to".
    Time formats should use a ratio symbol ∶ as suggested by the HIG
    "Favorites" → "Favourites" (multiple occurrences)
    
    https://gitlab.gnome.org/GNOME/fractal/issues/417

 fractal-gtk/res/ui/media_viewer_menu.ui | 2 +-
 fractal-gtk/src/appop/invite.rs         | 4 ++--
 fractal-gtk/src/widgets/message.rs      | 2 +-
 fractal-gtk/src/widgets/roomlist.rs     | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/fractal-gtk/res/ui/media_viewer_menu.ui b/fractal-gtk/res/ui/media_viewer_menu.ui
index 19cfc764..7145c1c2 100644
--- a/fractal-gtk/res/ui/media_viewer_menu.ui
+++ b/fractal-gtk/res/ui/media_viewer_menu.ui
@@ -23,7 +23,7 @@
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
                 <property name="sensitive">True</property>
-                <property name="text" translatable="yes">Save as</property>
+                <property name="text" translatable="yes">Save as...</property>
               </object>
               <packing>
                 <property name="expand">False</property>
diff --git a/fractal-gtk/src/appop/invite.rs b/fractal-gtk/src/appop/invite.rs
index 0694546c..ae8e64a3 100644
--- a/fractal-gtk/src/appop/invite.rs
+++ b/fractal-gtk/src/appop/invite.rs
@@ -239,12 +239,12 @@ impl AppOp {
         if let Some(ref sender) = sender {
             let sender_name = sender.get_alias();
             secondary = i18n_k(
-                "You’ve been invited to join to <b>{room_name}</b> room by <b>{sender_name}</b>",
+                "You’ve been invited to join <b>{room_name}</b> room by <b>{sender_name}</b>",
                 &[("room_name", &room_name), ("sender_name", &sender_name)],
             );
         } else {
             secondary = i18n_k(
-                "You’ve been invited to join to <b>{room_name}</b>",
+                "You’ve been invited to join <b>{room_name}</b>",
                 &[("room_name", &room_name)],
             );
         }
diff --git a/fractal-gtk/src/widgets/message.rs b/fractal-gtk/src/widgets/message.rs
index 543d26d4..c07b6b6b 100644
--- a/fractal-gtk/src/widgets/message.rs
+++ b/fractal-gtk/src/widgets/message.rs
@@ -423,7 +423,7 @@ impl MessageBox {
         let use_ampm = false;
         let format = if use_ampm {
             /* Use 12h time format (AM/PM) */
-            i18n("%l:%M %p")
+            i18n("%l∶%M %p")
         } else {
             /* Use 24 time format */
             i18n("%R")
diff --git a/fractal-gtk/src/widgets/roomlist.rs b/fractal-gtk/src/widgets/roomlist.rs
index d5c69141..10598e61 100644
--- a/fractal-gtk/src/widgets/roomlist.rs
+++ b/fractal-gtk/src/widgets/roomlist.rs
@@ -427,8 +427,8 @@ impl RoomList {
         );
         let fav = RGroup::new(
             &baseu,
-            i18n("Favorites").as_str(),
-            i18n("Drag and drop rooms here to add them to your favorites").as_str(),
+            i18n("Favourites").as_str(),
+            i18n("Drag and drop rooms here to add them to your favourites").as_str(),
         );
         let rooms = RGroup::new(
             &baseu,