Update geeklog to 2.1.0.

- Integrated Caching Template Library original developed by Joe Mucchiello [Tom]
- Support for themes to specify a default theme. Default themes template and css
  files will be used unless they are included in the new theme directory [Tom]
- Added configruable caching support for blocks (regular and gldefault),
  staticpages and articles [Tom]
- Speed increases by caching topic tree structure [Tom]
- What's Related article block now includes all Topics. Can set length of titles
  [Tom]
- Articles now list what Topics they are filed under. [Tom]
- New related_topics autotag. It displays all topics an item belongs too. [Tom]
- New related_items autotag. It displays all other related items based on what
  topics the defined item belongs too [Tom]
- Updated Command & Control layout. Plugins can now organized into groups. [Tom]
- New OAuth login methods supported (Google, Microsoft, Yahoo). OAuth supported
  now includes 1.0, 1.0a, and 2.0 (depends on what the provider supports) [Tom]
- Javascript and css can now be loaded in a specified order. [Tom]
- Numerous fixes for multi-language support [Tom]
- Added CKEditor 4.3.2 as the default advanced editor for Geeklog [Dengen]
- New article render which fixes entities etc... from showing up where they
  shouldn't [Dengen]
- New Advanced Editor System that allows developers to easily to add new
  javascript editors [Dengen]
- Article, Staticpages Poll and Topic IDs can now be 128 characters long [Tom]
- User Login page now can be accessed directly without first displaying a login
  error message [Tom]
- Fixed deadlock issues with the session table [Tom]
- Updated Hebrew language files, provided by LWC
- jQuery can now be included in the header [Tom]
- Updated to jQuery 1.10.2 and jQuery UI to 1.10.3 [Tom]
- Added a Filemanager [Kenji ITO]
- Added timepicker jQuery control [Dengen]

(taca)