Update tagging.extender.inc.php

Security: Remove XSS vector 
http://forums.modx.com/thread/42791/removing-tags-variable-from-reflect-url#dis-post-247387
Update tagging.extender.inc.php
Small fix - smtp password field in system settings
Refactor - File browser settings
Merge pull request #279 from mrhaw/patch-1

Update tagging.extender.inc.php
Change DOCTYPE declaration(HTML5)

Ready for TinyMCE4
Revert missing commit

https://github.com/modxcms/evolution/commit/2c4d02d89510637d910151f4868fe2e8c0477ead
Remove changes added during #90
- Hexadecimal entities not needed anymore for MODX tags
Merge branch 'bugfix' of https://github.com/modxcms/evolution into bugfix