Promote file von wikilink mappings
adding schema example to file
first steps toward fast hets run: adding parameter fast_parse
adding almost all controller action to yaml-file
add tests for git lib check if a file has changed
add git lib file changed checking function
add another test for git lib file changed check
delegate file changed check from model to lib
fast parse only if the ontology is not at the current state
make the root of wiki working correctly
name yml file correctly
remove misspellings of controller names
adding missing graphs controller
Loading the mappings in the Settings
adding the methods for generating links via mappings of the yml file
adding Help link to navbar
Merge branch 'staging' into 589-help_buttons_linking_to_wiki_pages

Conflicts:
	app/helpers/link_helper.rb
Merge branch 'staging' into 504-hets_fast_run
..and fixed bug "Hets.parse(..., structure_only: false)"

Conflicts:
	app/models/ontology_version/parsing.rb
adding small tests for testing get_mapping_for method
Merge pull request #630 from ontohub/504-hets_fast_run

Enable structure only parsing for hets, fixes #504.