Improved design of article/jotting listing

Improved design of article/jotting listing

Removed `nicekill` jotting, as it was too low quality
    application/models/entry_model.php

Removed files left over from article/jotting->entries refactor
    application/views/pages/articles.php                      (-)
    application/views/pages/jottings.php                      (-)

Now showcases thumbnail/icon, and date is pushed to right side.
    application/views/pages/entries.php
    css/style.css
    images/entries/2013_06_cpp_setup/thumbnail-2013_06_cpp_setup.png             (+)
    images/entries/2013_08_oeis/thumbnail-2013_08_oeis.png                       (+)
    images/entries/2013_10_gamedev01/thumbnail-2013_10_gamedev01.png             (+)
    images/entries/2013_11_skittles/thumbnail-2013_11_skittles.png               (+)
    images/entries/2014_01_screenrecord/thumbnail-2014_01_screenrecord.png       (+)
    images/entries/2014_02_watchfile/thumbnail-2014_02_watchfile.png             (+)
    images/entries/2014_02_watchfile/thumbnail-label.png                         (+)
    images/entries/2014_04_screenrecordalt/thumbnail-2014_04_screenrecordalt.png (+)
    images/entries/2014_05_lcov/thumbnail-2014_05_lcov.png                       (+)
    images/entries/2014_08_whylinux/thumbnail-2014_08_whylinux.png               (+)
    images/entries/2014_09_watermark/thumbnail-2014_09_watermark.png             (+)

Original thumbnails (75x75 px):
    maintenance/entry-thumbnails/2013_06_cpp_setup.png        (+)
    maintenance/entry-thumbnails/2013_08_oeis.png             (+)
    maintenance/entry-thumbnails/2013_10_gamedev01.png        (+)
    maintenance/entry-thumbnails/2013_11_skittles.png         (+)
    maintenance/entry-thumbnails/2014_02_watchfile.png        (+)
    maintenance/entry-thumbnails/2014_04_screenrecordalt.png  (+)
    maintenance/entry-thumbnails/2014_05_lcov.png             (+)
    maintenance/entry-thumbnails/2014_08_whylinux.png         (+)
    maintenance/entry-thumbnails/2014_09_watermark.png        (+)

Added two scripts for finalizing thumbnail visuals
    maintenance/thumbnailedges.sh                             (+)
    maintenance/thumbnaillabel.sh                             (+)