Fix the "upload" config for K3.
- no longer a separate config file - params set in bootstrap.
- no longer supports "create_directories", but this shouldn't matter since the
installer makes the uploads directory for us.
Remove the "log_file" config - already implemented in bootstrap.
Fix the "cookie" config for K3 - no longer separate file, now in bootstrap.
Remove application/config.php, ensuring its params are moved or no longer needed.
- site_domain -> base_url (already added to bootstrap)
- site_protocol -> optional part of base_url (documentation added to bootstrap)
- index_page -> index_file (already added to bootstrap)
- output_compression -> no longer supported (better done in php.ini anyway)
- internal_cache, internal_cache_path -> caching, cache_dir, cache_life (already added to bootstrap)
- global_xss_filtering -> no longer supported (better done with HTMLPurifier anyway)
- enable_hooks -> no longer supported (no longer used by Gallery either)
- log_threshold -> second argument in log attach (added to bootstrap)
- log_directory -> first argument in log attach (already added to bootstrap)
- display_errors, render_stats -> part of profiler setup (already added to index)
- extension_prefix -> n/a in K3 (transparent extension doesn't need "MY_")
- config_drivers -> not needed
- modules -> Kohana::modules() (already added to bootstrap)
Fix the "routes" config for K3 - no longer separate file, now in bootstrap.
We have four roots: admin_forms, site_forms, admin, and site.  These should
reflect the same four cases we had before.  This will need testing and revision...
Merge pull request #270 from shadlaws/fix_k3_config_files

Fix K3 config files