ui: Rename "private messages" / "PMs" to "direct messages" / "DMs", etc.

As mentioned in the issue, there are various variable names that
still use "private messages"; we're leaving those be for now.

PR zulip#5728 is open for a related API migration: to use 'direct'
instead of 'private' in POST /messages, when supported.

Fixes: zulip#5731

src/account-info/AccountDetailsScreen.js

@@ -91,7 +91,7 @@ export default function AccountDetailsScreen(props: Props): Node {
       )}
       <ZulipButton
         style={styles.pmButton}
-        text={isActive ? 'Send private message' : 'View private messages'}
+        text={isActive ? 'Send direct message' : 'View direct messages'}
         onPress={handleChatPress}
         Icon={IconPrivateChat}
       />

src/main/MainTabsScreen.js

@@ -74,7 +74,7 @@ export default function MainTabsScreen(props: Props): Node {
           name="pm-conversations"
           component={PmConversationsScreen}
           options={{
-            tabBarLabel: 'Private messages',
+            tabBarLabel: 'Direct messages',
             tabBarIcon: ({ color }) => <IconPeople size={24} color={color} />,
             tabBarBadge: unreadPmsCount > 0 ? unreadPmsCount : undefined,
             tabBarBadgeStyle: {

src/pm-conversations/PmConversationsScreen.js

@@ -61,7 +61,7 @@ export default function PmConversationsScreen(props: Props): Node {
           secondary
           Icon={IconPerson}
           style={styles.button}
-          text="New PM"
+          text="New DM"
           onPress={() => {
             setTimeout(() => navigation.push('new-1to1-pm'));
           }}
@@ -70,7 +70,7 @@ export default function PmConversationsScreen(props: Props): Node {
           secondary
           Icon={IconPeople}
           style={styles.button}
-          text="New group PM"
+          text="New group DM"
           onPress={() => {
             setTimeout(() => navigation.push('new-group-pm'));
           }}

src/settings/SettingsScreen.js

@@ -82,7 +82,7 @@ export default function SettingsScreen(props: Props): Node {
             key: 'conversation-views-only',
             title: 'Only in conversation views',
             subtitle:
-              'Messages will be automatically marked as read only when viewing a single topic or private message conversation.',
+              'Messages will be automatically marked as read only when viewing a single-topic or direct-message conversation.',
           },
         ]}
         onValueChange={value => {

src/sharing/SharingScreen.js

@@ -81,7 +81,7 @@ export default function SharingScreen(props: Props): Node {
           initialParams={params}
           options={{
             tabBarLabel: ({ color }) => (
-              <ZulipTextIntl style={[styles.tab, { color }]} text="Private Message" />
+              <ZulipTextIntl style={[styles.tab, { color }]} text="Direct message" />
             ),
           }}
         />

src/title/TitleSpecial.js

@@ -9,7 +9,7 @@ import styles from '../styles';
 
 const specials = {
   home: { name: 'All messages', icon: 'globe' },
-  private: { name: 'Private messages', icon: 'mail' },
+  private: { name: 'Direct messages', icon: 'mail' },
   starred: { name: 'Starred', icon: 'star' },
   mentioned: { name: 'Mentions', icon: 'at-sign' },
 };

static/translations/messages_en.json

@@ -110,7 +110,7 @@
   "{_}": "{_}",
   "Home": "Home",
   "All messages": "All messages",
-  "Private messages": "Private messages",
+  "Direct messages": "Direct messages",
   "Starred": "Starred",
   "Mentions": "Mentions",
   "Message": "Message",
@@ -240,8 +240,8 @@
   "Jot down something": "Jot down something",
   "Message {recipient}": "Message {recipient}",
   "{username} will not be notified unless you subscribe them to this stream.": "{username} will not be notified unless you subscribe them to this stream.",
-  "Send private message": "Send private message",
-  "View private messages": "View private messages",
+  "Send direct message": "Send direct message",
+  "View direct messages": "View direct messages",
   "(This user has been deactivated)": "(This user has been deactivated)",
   "(unknown user)": "(unknown user)",
   "Forgot password?": "Forgot password?",
@@ -278,8 +278,8 @@
   "Marked {numMessages} messages as unread": "Marked {numMessages} messages as unread",
   "Marking messages as unread…": "Marking messages as unread…",
   "{unreadCount, plural,\n  one {{unreadCount} unread message}\n  other {{unreadCount} unread messages}\n}": "{unreadCount, plural,\n  one {{unreadCount} unread message}\n  other {{unreadCount} unread messages}\n}",
-  "New group PM": "New group PM",
-  "New PM": "New PM",
+  "New group DM": "New group DM",
+  "New DM": "New DM",
   "Share": "Share",
   "Star message": "Star message",
   "Unstar message": "Unstar message",
@@ -320,7 +320,7 @@
   "Public": "Public",
   "Notifications": "Notifications",
   "Stream": "Stream",
-  "Private Message": "Private Message",
+  "Direct message": "Direct message",
   "Edit stream": "Edit stream",
   "OK": "OK",
   "Please share the image from your browser": "Please share the image from your browser",
@@ -333,7 +333,7 @@
   "Always": "Always",
   "Never": "Never",
   "Only in conversation views": "Only in conversation views",
-  "Messages will be automatically marked as read only when viewing a single topic or private message conversation.": "Messages will be automatically marked as read only when viewing a single topic or private message conversation.",
+  "Messages will be automatically marked as read only when viewing a single-topic or direct-message conversation.": "Messages will be automatically marked as read only when viewing a single-topic or direct-message conversation.",
   "Topics": "Topics",
   "Add subscribers": "Add subscribers",
   "Subscribe": "Subscribe",