Remove the CsvHelper (and fastercsv) and use stdlib CSV
Remove rcov support

As part of dropping Ruby 1.8 support, we can remove this cruft.
Add a test task for the lib/ directory and configure coverage for it
Remove ruby-debug from the Gemfile and configuration files
Remove platform requirement of simplecov in the Gemfile

Since simplecov is needed for all Ruby versions > 1.8
Replace all uses of Iconv with String#encode

String#encode is part of the Ruby standard library as of Ruby 1.9
and has replaced the Iconv library. This change breaks support for
Ruby 1.8.
Added GitHub issues list link in footer for admins and TAs
fix rake task markus:reset
Merge pull request #1466 from oneohtrix/master

fix rake task markus:reset
Added translations for Github issues list link.
fix failing submission tests
Merge pull request #1470 from oneohtrix/master

fix failing submission tests
Issue 96: Implemented feature request for at least one column already present when adding spreadsheet.
Style formatting.
Merge branch 'iconv-to-encode' of https://github.com/ferrous26/Markus into ferrous26-iconv-to-encode
Added parentheses.
Merge branch 'remove-csv' of https://github.com/ferrous26/Markus into ferrous26-remove-csv
var name & indent fixes
Merge branch 'remove-rcov' of https://github.com/ferrous26/Markus into ferrous26-remove-rcov
Merge branch 'remove-ruby-debug' of https://github.com/ferrous26/Markus in ferrous26-remove-ruby-debug