Fix typo in no_sidebar template variable name (#99)
Fix typo in no_sidebar template variable name (#99)

When the --no-sidebar flag was added, we accidentally were using the
wrong template parameter in the template views. As such, the sidebar
would never show up due to a typo. This changes the template variable to
no_sidebar and inverts the condition, instead of the erroneous
show_sidebar.
hfaran/slack-export-viewer,hfaran/slack-export-viewer