doc: follow up file list

follow up this commit:
https://github.com/groonga/groonga/commit/2d397d914d97a51bc6589d3f7a49457551719d1c
doc: remove trailing space
Merge pull request #159 from cosmo0920/follow-upfile-list

doc: follow up file list

Patch by cosmo0920. Thanks!!!
doc: update files

    % make -C doc update-files
doc ja: add `make -C doc update-files` description for doc/ja
Merge pull request #160 from cosmo0920/add-update-files-description-for-contribution

doc ja: add `make -C doc update-files` description for doc/ja

Patch by cosmo0920. Thanks!!!
doc: add missing header rows value
doc: fix documentation location and translate it
doc: update files

    % make -C doc update-files
doc: use "Groonga" notation
ii: fix wrong max segment

Redmine: fixes #2438

Reported by yoku0825. Thanks!!!
Remove unused code
doc: use "Groonga" notation
doc: use "Groonga" notation
Merge pull request #162 from cosmo0920/use-Groonga-notation-install

doc: use "Groonga" notation

Patch by cosmo0920. Thanks!!!
Merge pull request #163 from cosmo0920/use-Groonga-notation-server

doc: use "Groonga" notation

Patch by cosmo0920. Thanks!!!
Merge pull request #164 from cosmo0920/use-Groonga-notation-contribution

doc: use "Groonga" notation

Patch by cosmo0920. Thanks!!!
apt: add Ubuntu 14.04 (Trusty Tahr)
doc install/ubuntu.txt: add Ubuntu 14.04 LTS Trusty section.
Merge pull request #165 from cosmo0920/install-ubuntu-trusty

doc install/ubuntu.txt: add Ubuntu 14.04 LTS Trusty section.

Patch by cosmo0920. Thanks!!!