Close Connection when there is no connection value.

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13161 201d5d3c-b55e-5fd7-737f-ddc643e51545
Close Connection when there is no connection value.
 * If there is no $connection value, a server error message would be written on your server log.(PHP can not handle it.)

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13162 201d5d3c-b55e-5fd7-737f-ddc643e51545
issue 3595 protect from XSS

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13163 201d5d3c-b55e-5fd7-737f-ddc643e51545
issue 3596 protect from CSRF

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13164 201d5d3c-b55e-5fd7-737f-ddc643e51545
xe version update 1.7.3.5

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13165 201d5d3c-b55e-5fd7-737f-ddc643e51545
Close Connection when there is no connection value.
 * If there is no $connection value, a server error message would be written on your server log.(PHP can not handle it.)
 * r13162, r13161 has some mistake(Context::close() makes memory overload at DB close. I tested for a day... T^T;;)

git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13166 201d5d3c-b55e-5fd7-737f-ddc643e51545