first tests
fixed cast issue with java 8
added recordsPerPage=0 as reason for InvalidCriteriaException
added support for skip query criteria
basic helper functions for datatables
basic helper functions for document datatable
basic helper functions for user datatable
users and documents now use server-side paginations, sorting and filtering
removed pagination parameters when calling the API to know how many records match the quey
added pagination on files datatable
changed the processing sentence
Merge pull request #367 from giastfader/pagination

Server side pagination for files, users and documents