[9.0][FIX] Do not give warning/yellow branches just on translation errors.

[NL66278]

Runbot should not have yellow branches / branches in warning for errors like these: 2017-06-26 09:09:34,239 11218 WARNING 233335-refs-heads-8-0-3063-order-split-60f4d3-all openerp.addons.base.ir.ir_translation: module web_ir_actions_act_window_page: no translation for language nl