Add statistics of the last five allowed and denied entries, in tables.
Statistics of how often each user enters the shack, in a table.
Actually make statistics_recent_entries() return recent entries.
Separate the recent_entries subroutine into allowed & denied.
Refactor the above subroutines to show the variables used immediately.
Remove superfluous parentheses at the end of subroutine calls.
Sort the entry frequency hash in descending order.
Restrict the entry count to only show successful entries.
Describe what the tables show.
Fix a tiny bit of indentation.
Map a user's card number to his/her name in the allowed entries table.
Add a statistics button to the homepage.
Remove UTC from the denied entries timestamp by specifying the format.
Add lines between the table rows and columns for aesthetics.
Add 5px <td> padding so that the data doesn't finish against the line.
Display the link to the homepage on the statistics page too.
Merge pull request #3 from issyl0/feature/statistics

Add statistics of shack usage (user entry frequency, recent entries) and the associated CSS.