Proposed solution for Issue #41

Changes current per #41 and closes #41.
Rename navigation.currentRoute

Closes #39

Rename navigation.currentRoute to navigation.activeRoute
Add source and timestamp

Closes #40
Add source and timestamp values to navigation.activeRoute
Add _site to .gitignore
Remove duplicate set
Merge pull request #42 from SignalK/issue39

Rename navigation.currentRoute
Merge pull request #43 from SignalK/issue40

Adds source and timestamp to activeRoute
Merge pull request #44 from SignalK/issue41

Reorganize current group
Merge branch 'master' into gh-pages