New feature: TabPane can be focused and navigated by keyboard

The focused state of a TabPane can be styled using properties that apply
to the active tab.
Fix minor error leading to build-failure with JSLint.
Merge branch 'feature/focusable-tab-pane' into stable-3.0.x
Prepare v3.0.1 release
Merge tag 'v3.0.1' into stable-3.0.x
Prepare next release cycle.
Fix mixed CR/CRLF line endings in source code.

All line endings should now (dependening in your Git settings) be
platform neutral (meaning LF-only within Git and CRLF for Windows
if configured accordingly).
Merge branch 'hotfix/crlf-lineendings' into stable-3.0.x
Add Eclipse integration
Merge branch 'feature/eclipse-project' into stable-3.0.x
Corrected version range for echo3-webcontainer dependency
Prepare 3.0.2 release
Fix line endings of *.js files.
Merge branch 'hotfix/crlf-lineendings' into stable-3.0.x