Merge pull request #1 from fuxiaohei/develop

merge develop
fix bug, redis session doesnt work
bug fix, session stored in redis cannot be deleted
bugfix, delete the sid if it's values is empty

* regenerate sid, if the old key doesn't exists, set the new one directly
fixed bug: in logs package check if platform is windows
Merge pull request #487 from cloudaice/log-feature

fixed bug: in logs package check if platform is windows
Merge pull request #474 from pengfei-xue/develop

fix bug, redis session doesnt work
add comments for session packages, part 1
Merge branch 'develop' of git://github.com/astaxie/beego into develop
add comments for session packages, part 2
add comments for toolbox packages
Merge pull request #490 from fuxiaohei/develop

add comments for session and toolbox package
controller can controller whether render the template.

EnableReander default is true.
Merge branch 'develop' of git://github.com/astaxie/beego
add comments for testing, utils and validation packages
Merge pull request #491 from fuxiaohei/develop

add comments for testing, utils and validation packages
controller data inherit  the context's data
should copy the data direct. don't need range
basic auth for plugin
change 1.0.1 to 1.1.0