added new option 'add new applicant' into applicants page
fixed bug. Now convert to pdf file when its necessary
convert tab to spaces + fix html identation
separate logic from view in applicant list; changed js validation too
updated langs
Merge branch 'task-5534905'

* task-5534905:
  updated langs
  separate logic from view in applicant list; changed js validation too
  convert tab to spaces + fix html identation
  fixed bug. Now convert to pdf file when its necessary
  added new option 'add new applicant' into applicants page