Include Zend_Locale_Format

Fix Zend_Locale_Format not being included.
Merge pull request #1941 from TheFrozenFire/patch-1

Include Zend_Locale_Format
BUG Fixing Filesystem::sync breaking subsite pages with same URLSegments

Filesystem::sync() tries to run through all pages, without caring
which subsite the page came from. The problem with this is
code in SiteTree::validURLSegment() will return invalid information,
as it will check if the page exists, thinking it does, return false,
then the page will get a new URLSegment written, e.g. "home-2".

Instead of disabling the subsite filter in Filesystem::sync(), this
fix will just loop through each subsite and sync each subsite's pages
individually before doing the main site.
Merge pull request #1886 from halkyon/filesystem_sync_subsites

BUG Fixing Filesystem::sync breaking subsite pages with same URLSegments
FIX Avoid unnecessary user_error when no controller set for friendly errors in Debug class
Updating docs to use SiteTree for aggregates with LastEdited example

Using SiteTree is faster, because it doesn't do any joining of Page
to get the aggregate, even though the LastEdited field is only on
SiteTree in the case of Page.
Merge pull request #1944 from patbolo/bugfix/debug-no-controller

FIX Avoid unnecessary user_error when no controller set for friendly err...
Added "saves into..." label to UploadField template

CMS users shouldn't need to guess where their files will end up.