Provoke issue described in #164 in test.
Travis: No deployment branch; test develop.ontohub.org.
We need git-svn on travis for testing of the git branch and the further releases.
Merge branch 'develop' into issue164-undefined_kind_in_entities
Add CodeReference Model.
Add CodeReference to OntologyVersion.
get code positions from hets.
add method to create code-reference from a range.
add method to determine code reference path

Since we now generate Codeposition files with
the -o pp.xml option of hets, we will need
to determine the path to that file.
add method code reference creation from xml doc

Provided a Nokogiri xml doc and an ontology
name the corresponding code-range can be extracted
and a CodeReference object can be created.
Integrate CodeReference creation with import.
make ontology import tests green again

add fixture files for codepositions and add the
path to these files to the import call.
Add description to entities.
Merge branch 'staging' into augmenting326_parse_do_children_fully

Conflicts:
	app/models/ontology_version.rb
Fixed bug regarding initialization of exception notification.
CSS class container had to be row, here.
Fit help texts inside repo in bootstrap grid and fix crash in history of empty repo.
Merge branch 'staging' into augmenting_add_history_link_from_files_and_dirs
Save some characters (aka. cosmetics).
Merge pull request #402 from ontohub/augmenting_add_history_link_from_files_and_dirs

Add history link from files and dirs