Add Tests for determining Mapping-Class as Symbol.
implement passing version of mapping-query.
add graph as own view for graphs#index action.
change the view according to Tims suggestion
remove unused view file
Merge issue190... into augmenting112 for pages

Merge remote-tracking branch 'origin/issue190-optimize_ontology_title_bar' into augmenting112_ontology_link_graph
adjust js code to work with graphs#index view.
let graphs#index work as ontology#show subview.
let graph-js handle different mapping cases.
add handlebars as gem dependency.
refactor and add graph-info code as handlebar.
use handlebar-templates instead of jquery-code.