Fix min_range option to stop numberofcpucores.php returning 0

The minimum options for filter_var() with FILTER_VALIDATE_INT should me
min_range.
Fixes #148
Merge pull request #166 from inflammable/master

Fix min_range option to stop /sh/numberofcpucores.php returning 0
Merge remote-tracking branch 'upstream/master'

Conflicts:
	drop-dash-ui/src/main/resources/res/index.html