Fixes #595. Add doc on changing model scenario.
fixed wording
added docs about DB table and column quoting
Docs: caching WIP.
prioritized quoting using special syntax instead of doing it manually
* Fixed Model::loadMultiple() when populating from formName()
* Documentation corrections for data population and quoting names in SQL query
Merge pull request #597 from Agrumas/master

Corrections in docs and Model::loadMultiple fix
started controller docs
moved autoloader notes to internals
fixed controller example
Added Formatter::format().
Added DetailView.
Merge branch 'master' of github.com:yiisoft/yii2
Docs on caching:

1. Remove unnecessary samples.
2. Add configuration file location note for basic application.
3. Fix a couple of typos.
Merge branch 'master' of github.com:yiisoft/yii2