Add support for IPv6 in Stream table

Appartenly filter_input's FILTER_VALIDATE_IP validates IPv6 as well, so only that change is needed
Resolves #146
Fix minor typo
Stay on current tab after settings are submitted
Follow JS standards
Merge pull request #222 from x-team/issue-220

Issue 220: Stay on current tab after settings are submitted
Merge branch 'develop' into issue-146

Conflicts:
	includes/install.php
Merge pull request #210 from x-team/issue-146

Add support for IPv6 in Stream table