beego.Context.Abort return immediately

* add common 4XX/5XX HTTP exceptions
Merge pull request #317 from pengfei-xue/master

beego.Context.Abort return immediately
fix type
fix #316
fix param to params
fix test
add server host:port info when starting app
Merge pull request #318 from pengfei-xue/devel

add server host:port info when starting app
fix #315
#313
session & orm  register called twice for driver mysql
update docs
fix _ "github.com/go-sql-driver/mysql"
orm add test about CustomField
orm test add extra custom JsonField
add flush & read all chan data
support section

if iniconf.String("demo.key1") != "asta" {
+		t.Fatal("get demo.key1 error")
+	}
+	if iniconf.String("demo.key2") != "xie" {
+		t.Fatal("get demo.key2 error")
+	}
add httplib readme
update logic for check ini comments
Merge pull request #321 from smallfish/master

update logic for check ini comments