Fixes numerous bugs in the Photo Gallery and other areas.  Also fixes compatibility with new versions of some libraries.

Gotchas:

 * There was a corrupt template in a package for the 7.5.0 upgrade.
   If you already upgraded to 7.5.0, please import the package 
   located at: 
   WebGUI/docs/upgrades/packages-7.5.0/root_import_timetracking_user.wgpkg

 * WebGUI requires newer versions of some existing modules. Be sure to
   install them BEFORE upgrading. They are:

        JSON 2.04
        Config::JSON 1.1.2

Changelog:

 - fix: Extra head tags of unplaced assets included twice
 - improve rebuildLineage.pl behavior.  protect against assets that are too deep and don't destroy search index.
 - fix: CalendarUpdateFeeds workflow causes errors in log
 - rfe: maintenance - turn on/off maintenance mode from the command line
 - Slight performance increase in asset queries.
 - fix: Pluggable URL handlers didn't work with gateways other than /.
 - fix: RSS missing in message (perlDreamer Consulting, LLC.)
     http://www.plainblack.com/bugs/tracker/rss-missing-in-message
 - fix: Friends language error (perlDreamer Consulting, LLC.)
     http://www.plainblack.com/bugs/tracker/friends-language-error
 - fix: content handler and redirects
 - fix: newByDynamicClass would die if given bad parameters, must return undef
 - fix: AssetPackage.pm would give an error on importing a package through
    the web interface, but the package would be imported successfully.
 - fix: 7.5.0 upgrade template for time tracker was corrupt.
 - fix: Gallery is now part of the default set of assets
 - fix: replaced return; with return undef; and changed WGBP.
 - Default maximum attachment size is now 100kB
 - Updated to work with the new JSON 2.04 module. See gotcha.txt for details.
 - removed old CS based photo gallery prototype in favor of the new gallery
   asset
 - Added i18n for Gallery (Search) template
 - fix: Album description showing up in Photos when photo has no synopsis
 - fix: Photo now shows correct confirmation screen
 - fix: Photo now gets auto-committed according to Gallery approval workflow
 - fix: Formatting problems in Album view
 - fix: Photo and Album assets now retain their Owner after other users edit them.
 - fix: Gallery::Utility migration now retains createdBy, creationDate, and ownerUserId.
 - Testing Gallery::Utility a bit more thoroughly.
 - fix: Photo EXIF data now gets cached correctly and sanitized for 
    references (since JSON won't store them and they're of no use to us anyway).
 - fix: No current asset when ending up on Not Found page
 - fix: Couldn't add single photos to gallery.
 - fix: Make the Owner in editBranch to be the same as addEdit, allowing
   any user to be selected (perlDreamer Consulting, LLC.)
 - Added a simple SMTPD for use in testing (t/smtpd.pl)
 - autocommit for packages is handled by web method, not API method
 - fix: importing packages generates orphaned duplicates of all attached storage locations
 - show fields in tabs on DataForm default email template
 - fix: error rolling back version tags if a parent has a later revision date than its child