[fix] - ViewHelper image tag alt
[upd] version in ext_emconf.php
Merge tag 'v2.0.3'

Fix some issues on tag in fluid viewhelper

Conflicts:
	ext_emconf.php
Merge branch '6.x-stable'
[upd] version 2.0.4
[upd] update doc with github project link
[upd] dependencies on ext_emconf.php