feat(follow): add feed links, following page and tile (#52, #51)

Feed links go to the game and to the profile view of that game.
Add /following page, nav item and an opt-in Following tile.
Games not in your library show a catalog view with an add button.

public/i18n/en.json

@@ -381,6 +381,7 @@
     "LIGHT_MODE": "Light mode",
     "PLAY_NEXT": "Play next",
     "STATS": "Stats",
+    "FOLLOWING": "Following",
     "COMMUNITY": "Community",
     "POINTS": "Pile Points",
     "ADMIN": "Admin",
@@ -466,7 +467,9 @@
     "ERROR_LOAD": "Could not load the profile.",
     "TO_START": "Go to the home page",
     "PERFECT_GAMES": "Perfect games",
-    "AVERAGE_COMPLETION": "Avg. completion"
+    "AVERAGE_COMPLETION": "Avg. completion",
+    "GAME_NOT_SHOWN": "This game is not shown on this profile.",
+    "GAME_ACHIEVEMENTS": "{{unlocked}} / {{total}} ({{percent}}%)"
   },
   "PLAY_NEXT": {
     "TITLE": "What to play next",
@@ -846,7 +849,9 @@
     "LOAD_ERROR": "The game catalog could not be loaded.",
     "CORRECT": "Correct",
     "KEY": "ID {{appid}}",
-    "GONE": "This game no longer exists."
+    "GONE": "This game no longer exists.",
+    "NOT_IN_LIBRARY": "Not in your library yet.",
+    "ADD": "Add to my library"
   },
   "AUDIT": {
     "TITLE": "Audit log",
@@ -951,13 +956,18 @@
     "NOT_FOLLOWABLE": "This profile cannot be followed.",
     "LIMIT": "You already follow the maximum number of people.",
     "ERROR": "That did not work. Try again.",
-    "LOAD_ERROR": "The list could not be loaded."
+    "LOAD_ERROR": "The list could not be loaded.",
+    "LAST_ACTIVITY": "Last activity {{date}}",
+    "NO_ACTIVITY": "No activity yet",
+    "SHOW_ALL": "Show all"
   },
   "INBOX": {
     "TITLE": "Inbox",
     "EMPTY": "No messages yet.",
     "LOAD_ERROR": "The inbox could not be loaded.",
     "DIGEST": "{{name}}: {{parts}}",
+    "DIGEST_PARTS": "{{parts}}",
+    "ON_PROFILE": "on their profile",
     "VISIBILITY": "{{name}} changed their profile visibility, so you no longer follow them.",
     "PSN_EXPIRING": "Your PlayStation link ends in about 2 days. Paste a new NPSSO code in the settings to keep the sync running.",
     "PSN_EXPIRED": "Your PlayStation link has ended. The sync skips PlayStation until you paste a new NPSSO code.",