begining improve the rake task for categories
rake task loads ontology from ontohub.org

if it loads nessecery and imports it into the meta
 repository. and it generates the categories
remove non needed variable and method call
now using everytime the meta repository
remove unusefull database call
according our style guide
Merge branch 'staging' into 229-rake-task-for-ontology-categories
changes according to pull request
Merge pull request #1002 from ontohub/229-rake-task-for-ontology-categories

229 rake task for ontology categories