created v1/validate/ endpoint

[ale23yfm]

This endpoint checks for jobs which are not validated today.
Param: index - how many urls to be returned (10 by default)
As response you will see

{
    "numFound" - how many jobs are not validated
    "count" - how many jobs are returned
    "jobs": [  ] - array of urls
}

After returning them, for each job vdate field is updated to current day

[ale23yfm]

I also documented it

[ale23yfm]

closes #1135

[sebiboga]

@aleyfm please add a RESPONSE sample
Please also update documentation on api.peviitor.ro
If you want please also update Swagger on TEST