content-length not set in case EnableGZIP=true

This results in responses with Content-Type as gzip as opposed to original content type.
This affects ServeJSON() function.

Fixed typo in orm/models_boot.go

Add Count method to BeeMap struct

This adds a Count() method to BeeMap struct that returns the number of
items within the safe map.

Modify func camelString() to be more robust

1. In previous edition, for case "pic_url_1", the func will return
"PicUrl_1", but "PicUrl1" seems to be more reasonable.
2. More test cases please refer to utils_test.go

Changing content type for template

Ability to register pre/post signal handlers

Remove a regression on AppPath

The application path is incorrect on Windows with the command line "go run". AppPath is assigned to the temp directory instead the folder project

set perm of rotated log to 440

statistics lock

Fix :supervisor work dir

policies implementation

Another Fix to #2263

resolves #2291, introduces AndNotCond/OrNotCond to orm.Condition

typo fix in comments, Getfiles-->GetFiles

Fix xml.GetSection() function which causes a panic

Fix http body may not be closed

beego/session: return proper error when session is not found