setup: show internal and external links on finish

internal generated from host, port and url_base, external is just
jfa_url. Both are shown (if jfa_url is set).

lang/common/en-us.json

@@ -41,7 +41,9 @@
         "delete": "Delete",
         "myAccount": "My Account",
         "referrals": "Referrals",
-        "inviteRemainingUses": "Remaining uses"
+        "inviteRemainingUses": "Remaining uses",
+        "internal": "Internal",
+        "external": "External"
     },
     "notifications": {
         "errorLoginBlank": "The username and/or password were left blank.",

lang/setup/en-us.json

@@ -33,8 +33,9 @@
     },
     "endPage": {
         "finished": "Finished!",
-        "restartMessage": "Features like Discord/Telegram/Matrix bots, custom Markdown messages, and a user-accessible \"My Account\" page can be found in Settings, so make sure to give it a browse. Click below to restart, then refresh the page.",
-        "urlChangedNotice": "If you've changed the host, port, subfolder etc. that jfa-go is hosted on, check the URL is right.",
+        "moreFeatures": "Tons more features like Discord/Telegram/Matrix bots and custom Markdown messages can be found in Settings, so make sure to give it a browse.",
+        "restartReload": "Click below to restart, then access jfa-go at one of the given internal/external URLs.",
+        "ifFailedLoad": "If it doesn't load, check the application's logs for any clues as to why.",
         "refreshPage": "Refresh"
     },
     "language": {