Various Rails model caching optimizations to reduce database load and increase performance
Override ScriptLevel.script, ScriptLevel.stage, and Stage.script to always return the deep-cached model object
Add Script.cached, Stage.cached to replace shallow model object with the deep-cached equivalent
typo
re-disable concept progress and trophies
whitespace changes
Merge pull request #808 from code-dot-org/rails_cache_model

Rails model caching
Revert "Rails model caching"
Merge pull request #812 from code-dot-org/revert-808-rails_cache_model

Revert "Rails model caching"
Changed links to the shop.
Merge pull request #813 from code-dot-org/shop-links

Changed links to the shop.
turn on query trace in dev config
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
Added newline.
use cached_script for next_level, previous_level, cached_last?
script cache by id and name
Merge branch 'milestone_caching' of github.com:code-dot-org/code-dot-org into milestone_caching
should be cached
should be cached
..
Merge pull request #816 from code-dot-org/milestone_caching

Milestone caching
test for caching