Update roadmap.md

roadmap.md

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 # Roadmap
 
+Please consider it as an indicative roadmap, things can change.
+
+Item are expressed in a (roughly) decreasing priority order.
+
+## Features
+
+- Interface redesign
+- Scheduler
+- Self Service, quotas
+- Auto scalability
+- Load balancing
+- Forecaster
+
+
+## Fixes
+
+- Better browser scalability for huge infrastructures
+- [Resolve known bugs](https://github.com/vatesfr/xo/blob/master/doc/known_bugs/README.md)