[gtkmm-documentation] (31 commits) ...Merge branch 'master' into 'master'

[Kjell Ahlstedt <kjellahl src gnome org>]

Summary of changes:

  f0ba4a6... translate chapter 11 and update some translation.
  8758814... fix typo and format file.
  71e0170... translate chapter 12.
  1c4917a... translate chapter 13.
  94590f7... translate chapter 14.
  4b5515c... translate chapter 15.
  3a964cc... translate chapter 16.
  17407d3... translate chapter 17.
  5adf168... translate chapter 18.
  620eaa6... translate chapter 19.
  ba2e6d7... translate chapter 20.
  83bf546... translate chapter 21.
  bcf709c... translate chapter 22.
  2405c23... translate chapter 23.
  50a0dec... translate chapter 24.
  e83cdaa... translate chapter 25.
  fe3dfb0... translate chapter 26.
  5a785b8... translate chapter 27.
  bbe2017... translate chapter 28.
  76e5529... translate chapter 29.
  5b52243... translate chapter 30.
  d913088... translate appendix A.
  e852f56... translate appendix B.
  7cb39e1... translate appendix C.
  39f74d0... translate appendix D.
  4bd0801... translate appendix E.
  156d583... translate appendix F.
  933387e... translate appendix G.
  50acc73... Merge remote-tracking branch 'upstream/master'
  826fb02... update the translation of the modified text.
  c1ad7c7... Merge branch 'master' into 'master'