add daily reports controller scaffolding
Continue work on controller, add views folder for daily reports

added the views folder, some specs and a couple actions for the
daily_reports controller.
Add parameters to controller spec
get the daily_report index and show pages working
get the id param from the whitelisted params

the 'set daily report' method in the daily_report_controller was setting
the daily_report based on the id in the raw params, changed it to use
the sanitized http parameters.
remove commented code
Initial tests and code for link_to_daily_report

Moved specs and code from report_helper and report_helper_spec to
daily_report_helper and daily_report_helper_spec.
create helper method to generate link for daily_report
make icons on report show links to dr_report show page
handle 'no daily_report found' error for icons-as-links

the helper method for dr_links now returns empty string when no daily
reports are found for a given date and employee
add the links to daily_report show page