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/plugins/plugin_misc_welcome.py

@@ -74,12 +74,12 @@ class Welcome(object):
     def __init__(self, host):
         log.info(_("plugin Welcome initialization"))
         self.host = host
-        host.memory.updateParams(PARAMS)
+        host.memory.update_params(PARAMS)
 
-    def profileConnected(self, client):
+    def profile_connected(self, client):
         # XXX: if you wan to try first_start again, you'll have to remove manually
         #      the welcome value from your profile params in sat.db
-        welcome = self.host.memory.params.getParamA(
+        welcome = self.host.memory.params.param_get_a(
             WELCOME_PARAM_NAME,
             WELCOME_PARAM_CATEGORY,
             use_default=False,
@@ -93,8 +93,8 @@ class Welcome(object):
 
         if welcome:
             xmlui = xml_tools.note(WELCOME_MSG, WELCOME_MSG_TITLE)
-            self.host.actionNew({"xmlui": xmlui.toXml()}, profile=client.profile)
-            self.host.memory.setParam(
+            self.host.action_new({"xmlui": xmlui.toXml()}, profile=client.profile)
+            self.host.memory.param_set(
                 WELCOME_PARAM_NAME,
                 C.BOOL_FALSE,
                 WELCOME_PARAM_CATEGORY,