ADD methods to display activities list and information in a more friendly and smartly way #1
FIX some bugs of add global activities

	修改:         main/application/controllers/act_add.php
	FIX a bug of add global activities, which have always display '1'

	修改:         main/application/controllers/act_list.php
	修改:         main/application/libraries/Data.php
	ALLOW the fouth argument to transform error message and successed data array

	修改:         main/application/models/act_model.php
	ADD functions to get activities list and info

	修改:         main/application/models/control_center_model.php
	修改:         main/application/models/setup_model.php
	修改:         main/application/models/user_model.php
	ADD a menthod to get user section id.
	UPDATE $query->num_rows() to $this->db->count_all_results().

	修改:         main/application/views/act_list_view.php
	ADD methods of display activities list, which improved lots of UI design and data transform stress
	POINT:HTML5 LocalStorage

	新文件:       main/img/load.gif
	ADD a image instead of loading message

	新文件:       main/js/localstorage.js
	ADD a plugin of localstorage, which can simplify the mothod of H5 LS I/O instruction