massive refactoring to switch from camelCase to snake_case:

historically, Libervia (SàT before) was using camelCase as allowed by PEP8 when using a
pre-PEP8 code, to use the same coding style as in Twisted.

However, snake_case is more readable and it's better to follow PEP8 best practices, so it
has been decided to move on full snake_case. Because Libervia has a huge codebase, this
ended with a ugly mix of camelCase and snake_case.

To fix that, this patch does a big refactoring by renaming every function and method
(including bridge) that are not coming from Twisted or Wokkel, to use fully snake_case.

This is a massive change, and may result in some bugs.

sat/tools/common/dynamic_import.py

@@ -26,7 +26,7 @@ log = getLogger(__name__)
 
 
 def bridge(name, module_path="sat.bridge"):
-    """Import bridge module
+    """import bridge module
 
     @param module_path(str): path of the module to import
     @param name(str): name of the bridge to import (e.g.: dbus)