Add validation api
Fix style bag in admin page
Remove disused property
Change to set data when became instance
Fix version in some files
Change class name and method name in MW Validation Rule Class
Change Class name in MW Form Field Class
Change MW Session Class is not static Class
Fix bug that can not be instantiated
Fix bug that calls a method that abolished
Change header comments
Move to MWF Functions Class generic methods
Fix validation api #5
Merge branch 'develop-validation-api' into develop

Conflicts:
	mw-wp-form.php
	system/mw_validation_rule.php
	system/mw_wp_form_admin_page.php
	validation_rules/mw_validation_rule_akismet.php
	validation_rules/mw_validation_rule_alpha.php
	validation_rules/mw_validation_rule_alphanumeric.php
	validation_rules/mw_validation_rule_between.php
	validation_rules/mw_validation_rule_date.php
	validation_rules/mw_validation_rule_eq.php
	validation_rules/mw_validation_rule_filesize.php
	validation_rules/mw_validation_rule_filetype.php
	validation_rules/mw_validation_rule_hiragana.php
	validation_rules/mw_validation_rule_in.php
	validation_rules/mw_validation_rule_katakana.php
	validation_rules/mw_validation_rule_mail.php
	validation_rules/mw_validation_rule_minlength.php
	validation_rules/mw_validation_rule_noempty.php
	validation_rules/mw_validation_rule_nofalse.php
	validation_rules/mw_validation_rule_numeric.php
	validation_rules/mw_validation_rule_required.php
	validation_rules/mw_validation_rule_tel.php
	validation_rules/mw_validation_rule_url.php
	validation_rules/mw_validation_rule_zip.php
Change heading line of CSV also escape