Merge pull request #2 from cgrevisse/master

Sync
Merge pull request #14 from gneyens/master

Edit ontology
Merge pull request #15 from gneyens/master

Edit bug fix
Merge pull request #3 from cgrevisse/master

Update
Add default value for comment attribute
Add (MineGui) XML import feature
Update views.py
Adapt code such that onotolgies are taken into account
Changing attribute from bool to string

Got some weird Integrity Errors
Merge pull request #20 from rsirres/master

Add XML import feature
Sort Ontology DBs, XML import bug fixes (comment, default)
XML Schema for export file validation
Bug fix in MIRIAM REST interface data retrieval
DB Delete: include recently added tables
Merge pull request #5 from cgrevisse/master

T