Update helper.php

Prevents thousands separator (",") from being used when total cache size exceeds 1mb.

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=31826
Remove unused language strings in com_weblinks
Remove unused language strings in com_contact
 + [#31850] The parent item search ajax based on menu location. Thanks
Lu Nguyen
(Fix #1827)
 # [#31890] tagged items list has class "list-striped" and
"list-condensed" in code. Thanks Elin waring.
(Fix #1865)
Merge pull request #1942 from brianteeman/patch-13

Remove unused language strings in com_contact
 $ Updating Italian Tinymce lang file
Fix some PHPCS issues
Correction
[#31998] Smart Search Index Button broken
 # [#31987] *Joomla multilingual install: sef and flags issues. Thanks
Beat
(Fix #1965)
 $ [#31942] Two factor authentication - Language file. Thanks Brian
Teeman
(Fix #
 # [#31985] Remove clear lines at the TinyMCE. Thanks Tobias Zulauf
(Fix #1964)
 # [#31817] *Helpsites.xml Refresh button not active in front-end
profile edit. Thanks Julien Vonthron
(Fix #1959)
 # [#31696] Profile 'Web site' field not working well. Thanks Anthony
THERREAU
Add system tests for categories and articles in the front end. Thanks
Puneet Kala.
Added tag selects to hathor template
Typos
Merge pull request #1937 from brianteeman/patch-5

Remove unused language strings in com_weblinks
 # [#32020] "Articles Categories" Module - cache is not working. Thanks
Peter Martin
(Fix #1984)