rename framework methods to camelCase

for easier distinction:
- camelCase or singleword: framework method
- snake_case: driver method

(driver) parameters are lowercase, single word framework variables may
have to start with uppercase letters to distinguish...

Change-Id: I76536b6390324625b242c4f190553014c2ca61d6
Reviewed-on: https://forge.frm2.tum.de/review/20295
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

secop/params.py

@@ -83,7 +83,7 @@ class Parameter(Accessible):
 
     poll can be:
     - False  (never poll this parameter)
-    - True   (poll this ever pollinterval)
+    - True   (poll this every pollinterval)
     - positive int  (poll every N(th) pollinterval)
     - negative int  (normally poll every N(th) pollinterval, if module is busy, poll every pollinterval)