selected account: behaviour on conversation

This commit add a few changes to prevent bugs when account is changed
during call or conversation or when:

- Receiving an incoming call change selected account to be the same
as call destination account
- Making a call disable account selection
- Changing the selected account close current conversation

Tuleap: #1532
Change-Id: Ia37fabce0285a02233b35e69e73244e14d0a334a
Reviewed-by: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
diff --git a/src/ChooseAccountVC.h b/src/ChooseAccountVC.h
index 9c2e268..a0384e9 100644
--- a/src/ChooseAccountVC.h
+++ b/src/ChooseAccountVC.h
@@ -21,4 +21,7 @@
 
 @interface ChooseAccountVC : NSViewController
 
+-(void) enable;
+-(void) disable;
+
 @end