Normalize wizard message views

We use the proper icon between info, question, warning and error.
We remove the exclamation mark in info messages.

issue9429
review301831002

images/tryton-question.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 17h-2v-2h2v2zm2.07-7.75l-.9.92C13.45 12.9 13 13.5 13 15h-2v-.5c0-1.1.45-2.1 1.17-2.83l1.24-1.26c.37-.36.59-.86.59-1.41 0-1.1-.9-2-2-2s-2 .9-2 2H8c0-2.21 1.79-4 4-4s4 1.79 4 4c0 .88-.36 1.68-.93 2.25z"/></svg>

src/common.js

@@ -2717,6 +2717,7 @@
         'tryton-open',
         'tryton-print',
         'tryton-public',
+        'tryton-question',
         'tryton-refresh',
         'tryton-remove',
         'tryton-save',