Log Message:
Update to 2.26.2:

Version 2.26.2:
---------------
* Accessibility Guide:
  - Fixed validity errors in translations (Claude Paroz, Shaun McCance)
  - Updated translations:
    el    (Jennie Petoumenou)
    en_GB (Philip Withnall)
    hu    (Gabor Kelemen)
* System Admin Guide:
  - Fixed typo, bug #577327 (Milo Casagrande)
  - Updated translations:
    el    (Jennie Petoumenou)
    es    (Jorge Gonzalez)
* User Guide:
  - Fixed validity errors in translations (Claude Paroz, Shaun McCance)
  - Removed outdated info on session preferences (Paul Cutler)
  - Updated translations:
    el    (Μάριος Ζηντίλης)
    es    (Jorge Gonzalez)
    fr    (Claude Paroz)
    zh_CN (TeliuTe)