Fix CONST_CHANGELOG.txt for 1.4

1. A few lines above it is recommended to:
```
  * Remove from all the `include` section the line:

        DragTracker.js #ext.overrides
```

2. swap 2 steps in order to create [routing.js] section before checking its content in an other step.

3. remove a getMatrix fix because already mentioned previously.

4. GRANT USAGE is not enough when creating a new "main_static" schema.