Add session object so that we have one class that control logged in session

client/bin/site_login.py

Index: client/bin/site_login.py
diff --git a/client/bin/site_login.py b/client/bin/site_login.py
index 7d212fc582bbaf25e26dd9071e379c159f9feda2..87077fbec5a42cef6ea302d68f0aaae2b8db727f 100644
--- a/client/bin/site_login.py
+++ b/client/bin/site_login.py
@@ -91,10 +91,11 @@ def wait_for_screensaver(timeout=10, raise_error=True):
 def nuke_login_manager():
     nuke_process_by_name('session_manager')
     wait_for_browser()
+    
 
 def nuke_process_by_name(name, with_prejudice=False):
     pid = int(utils.system_output('pgrep -o ^%s$' % name))
     if with_prejudice:
         utils.nuke_pid(pid, [signal.SIGKILL])
     else:
-        utils.nuke_pid(pid)
+        utils.nuke_pid(pid)