* cgi search subtitle and odf link

* manifest and concordance, subtitle and author info

* diakonos syntax highligthing;

* cgi generated sample search form
  * order results on files of the same title, in multiple files (with
    different filenames)
  * postgresql, character case sensitivity, control, on/off
  * tail decoration, gplv3 & sisu info

* texinfo/info (pinfo) module starts to do something vaguely useful again
  [not a much used module, testing required]

* print XML rendition of document structure to screen -T

* sisurc.yml default, color set to true
  [apologies if this causes anyone any inconvenience, it is configurable in
  sisurc.yml]

* help, man pages, README (man(8) related and env, 'sisu -V')

* docbook entries removed for the present time

* sisu-install (install ruby rant script renamed) and permissions set to
  executable

skins cleaned a bit and output info on sisu modified, esp. in html

html no link to concordance if generated on document above word count 260k

odf url match bug fix

dal text block fix for dealing with url to be followed by <br>

minor cosmetic stuff