Merge remote-tracking branch 'upstream/master'
Rename memcache variable to cache
Rename HMAC:$memcache to $cache
Added optional header that can be added to the output when calling Ini::write().
Added separate app config files so the originals can stay untouched for Elefant updates

App configuration defaults are now read first from apps/<appname>/conf/config.php,
which should no longer be edited directly, then from conf/app.<appname>.<env>.php,
where <env> is the value of the ELEFANT_ENV environment variable (or its default
value of "config").

This makes it so you can more easily update 3rd party apps without worrying about
having edited one of its files and possible merge conflicts. See discussion:

http://www.elefantcms.com/forum/discussion/155/directory-structure/p1

Still need to add a note to existing app/*/conf/config.php files with instructions,
as well as update the online documentation.
Merge branch 'master' of git@github.com:jbroadway/elefant
array_replace_recursive() is better than a merge here
Change backend config setting back to memcache
Merge pull request #112 from indytechcook/cache_rename

Rename memcache variable to cache
Started renaming tables with elefant_ prefix
Fixed a minor bug in how the installer saves the email_from setting and updates it in two places instead of one
Merge branch 'master' of github.com:jbroadway/elefant
Added missing prefixes
Updated unit tests with table prefix
Improved for html5 validation
Updated permissions for cache files
Merge branch 'master' of github.com:jbroadway/elefant
Initial commit for Russian and Ukrainian translations
Updated docblock on init()
Fixed $memcache reference in navigation_clear_cache() to point to $cache