Update pfs.py

Update PFS for Shockwave Release v12.1.3.153
https://bugzilla.mozilla.org/show_bug.cgi?id=1032732
Cast stats counts as integers (bug 997465)

Also:
- use a setting for the collector addon
- remove dbg from stats/manager.js
Merge pull request #135 from yohanboniface/bug-997465-count-as-integer-for-stats

Cast stats counts as integers (bug 997465)
Merge pull request #134 from bprabhanjan/patch-2

Update pfs.py
Commit from Mozilla Verbatim by user gialloporpora.: 3286 of 3286 strings translated (0 fuzzy).