[ske48gp/app.rb] rename variable for debug option, from $debug to $opt_debug

  - It is global variable for ske48gp library.
[ske48gp/*] some cosmetic change
[ske48gp/views/layout.erb] show next_url for debug
[ske48gp/views/*] fix bug where data-next-page and data-last-page in "read more" button are incorrectly set.
[ske48gp/views/layout.erb] set prettyLoader image url obviously in layout.erb
[ske48gp/views/layout.erb] fix bug where "read more button" event is not registered after loading next page.
[ske48gp/app.rb] now not try to retrieve images that could not be downloaded

  - only try to retrieve images tha has not been tried to download yet.
[ske48gp/public/css/layout.css] add style for BODY

  -  and remove To-Do list
[ske48/index.php] add kenkyuusei6
[estseek/ske48blog.conf] change domain name
[ske48gp/app.rb] change domain name
[ske48gp/app.rb, ske48gp/public/css/layout.css, ske48gp/views/browse_p.erb]
add fallback for member's photo image
[ske48gp/app.rb] optimize image url
  - if rotate=0 or 1, use not /trans/ but /mat/
  - set GURU.PNG for imgage which is failed to download
[ske48gp/app.rb, ske48gp/views/layout.erb] add 'n' URLparameter which indicates no image loading
  - show placefolder image instead of thumbnail image
[ske48gp/app.rb] in get 'trans/*' function, if width or height is not set, skip resize_image()
[ske48gp/public/css/layout.css, ske48gp/views/layout.erb] change layout and design

  - member list wraps correctly
  - some minor change
[ske48gp/public/css/layout.css, ske48gp/views/browse_p.erb, ske48gp/views/layout.erb]
  add +1 button (trial)
[ske48gp/public/css/layout.css] change design for mobile
[ske48gp/views/layout.erb] some cosmetic change
[views/layout.erb] introduce Google Analystics