TinyMCE 4.1.5 update
TinyMCE  4.1.5
Merge remote-tracking branch 'upstream/master' into upstream

Conflicts:
	zp-core/zp-extensions/tinymce4/plugins/advlist/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/anchor/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/autoresize/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/autosave/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/contextmenu/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/fullpage/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/legacyoutput/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/lists/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/media/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/nonbreaking/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/noneditable/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/paste/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/spellchecker/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/tabfocus/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/table/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/template/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/textcolor/plugin.min.js
	zp-core/zp-extensions/tinymce4/plugins/visualchars/plugin.min.js
	zp-core/zp-extensions/tinymce4/skins/lightgray/skin.ie7.min.css
	zp-core/zp-extensions/tinymce4/skins/lightgray/skin.min.css
	zp-core/zp-extensions/tinymce4/themes/modern/theme.min.js
	zp-core/zp-extensions/tinymce4/tinymce.min.js