#1846 correction des try/except:

 Q                         | R
 ------------------------- | -------------------------------------------
 Correction de bugs ?      | oui
 Nouvelle Fonctionnalité ? | non
 Tickets concernés         | #1846 

nettoyage pas complete mais meilleur que avant.

```bash
$ find zds -type f | xargs -I {} grep -Hn 'except:' {} | grep -v tests
zds/article/models.py:220:        except:
zds/article/models.py:239:        except:
zds/article/models.py:255:        except:
zds/article/views.py:107:    except:
zds/forum/feeds.py:45:        except:
zds/forum/feeds.py:105:        except:
zds/forum/models.py:221:        except:
zds/forum/models.py:236:        except:
zds/gallery/views.py:47:    except:
zds/gallery/views.py:154:        except:
zds/gallery/views.py:266:    except:
zds/gallery/views.py:274:        except:
zds/gallery/views.py:295:    except:
zds/gallery/views.py:337:    except:
zds/member/decorator.py:11:        except:
zds/member/views.py:450:            except:
zds/member/views.py:500:            except:
zds/member/views.py:537:        except:
zds/member/views.py:561:            except:
zds/member/views.py:628:                    except:
zds/member/views.py:711:            except:
zds/member/views.py:894:    except:
zds/middlewares/profile.py:121:        except:
zds/middlewares/SetLastVisitMiddleware.py:14:        except:
zds/mp/models.py:98:        except:
zds/mp/views.py:215:                except:
zds/mp/views.py:519:    except:
zds/pages/views.py:96:            except:
zds/tutorial/models.py:397:        except:
zds/tutorial/views.py:529:        except:
zds/tutorial/views.py:551:        except:
zds/tutorial/views.py:638:            except:
zds/utils/mps.py:78:                except:
zds/utils/mps.py:106:                except:
zds/utils/templatetags/emarkdown.py:80:    except:
zds/utils/templatetags/emarkdown.py:96:    except:
zds/utils/templatetags/profile.py:27:    except:
```