Updated docs/emacs

  * emacs/emacs.org:
    - added code borrowed from orgmode.org (time of sunrises and sunsets);
    - small rephrase of one of capture templates;
    - changed name of location;
    - added configuration for planning (todo and tags);
  * TOP/emacs.d/: updated files (tangled from Org document):
    - calendar-us.el;
    - org-us.el;
    - mode/org-capture-ideas.txt .

Signed-off-by: Vladimir Lomov <lomov.vl@gmail.com>