Improve item abilities and attributes

[builder-247]

This PR fixes two issues with item tooltips:

• Ability name detection was detection based on a regex relying on capitalization, which was inconsistent for a few items e.g. Bloodstone
• Added support for uppercase stats displayed at the bottom:

Requires a release from https://github.com/odota/dotaconstants/pull/156

[howardchung]

Published new dotaconstants