Make feature overview in README, not sure I'll really maintain it

README.md

@@ -11,6 +11,44 @@ Dedication. For the boring "legal" details, see the file `COPYING`. Please use
 and reuse Vervis for a Good purpose, and share your work too in the same
 spirit.
 
+## Features
+
+    [ ] - To do
+    [~] - Work in progress
+    [/] - Initial coding done, needs tests and polishing
+    [x] - Complete
+
+    [ ] User management
+      [ ] View your personal overview
+      [ ] Other users' pages
+      [ ] Register
+      [ ] Delete account
+      [/] Log in
+      [/] Log out
+      [ ] Reset password
+      [ ] TLS client cert
+        [ ] Upload it
+        [ ] View it
+        [ ] Log in using it
+      [ ] Change profile details
+      [ ] Key management
+        [ ] Add key
+        [ ] Delete key
+        [ ] View keys
+    [ ] Project management
+      [ ] Tickets
+      [ ] Wiki
+      [ ] Kanban
+      [ ] Merge requests
+    [ ] Repo management
+    [ ] Git network access
+      [ ] SSH push
+      [ ] SSH pull
+      [ ] git://
+      [ ] HTTP(S) push
+      [ ] HTTPS(S) pull
+    [ ] Federation
+
 ## Installation
 
 See `INSTALL.md`. To be honest, I haven't written it yet. Just use `stack