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_frontends/jp/xml_tools.py

@@ -20,8 +20,8 @@
 from sat.core.i18n import _
 from sat_frontends.jp.constants import Const as C
 
-def etreeParse(cmd, raw_xml, reraise=False):
-    """Import lxml and parse raw XML
+def etree_parse(cmd, raw_xml, reraise=False):
+    """import lxml and parse raw XML
 
     @param cmd(CommandBase): current command instance
     @param raw_xml(file, str): an XML bytestring, string or file-like object
@@ -51,7 +51,7 @@ def etreeParse(cmd, raw_xml, reraise=False):
         )
     return element, etree
 
-def getPayload(cmd, element):
+def get_payload(cmd, element):
     """Retrieve payload element and exit with and error if not found
 
     @param element(etree.Element): root element