Fixed description of steps
deleted .DS_Store
remove unimplemented option for TOL tree, user upload

The demo really only does one thing right now, which is to process a
pre-designated input file.  So I'm trying to make this clear from the
interface.
trying to see if this is what screwed up the main page
renamed namelist_TOL.txt file

This prevents the "TOL" option from appearing in the drop-down of user
choices.  This option has never worked so I'm just taking it out of the
front end to avoid confusion.
revert
explanatory text
more space for explanations of inputs
fixed spelling error that created warning
revised system for managing demos; code commenting

Demo files are placed in static/sample_data/demo_genetrees and named
demo_<something>. Currently, it is assumed that these are Newick files
with the "embedded ids" style of names, and that we are going to match
against the Bininda-Emonds mammals tree.

The demo names appear in the Reconciliotastic pull-down menu by virtue
of the following code in reconciliotastic.py, which matches on the
demo_ prefix:

    datalist =
os.listdir(os.curdir+'/applications/shiny/static/sample_data/demo_genetr
ees')
    datalist = [n.split('_',1)[1] for n in datalist if n.split('_')[0]
== 'demo']

The file path is reconstructed later in phylotastic.js with the
following:

	treeFileName = '/sample_data/demo_genetrees/demo_'+treeName;
reconfigured selection of demo data sets

see explanation in sample_data/README_demos