Added the possibility for team (double) matches in a tournament (Issue #14)

The code still needs to be polished. To enable double matches you have to set the teamType property of a tournament to 1 by manually editing the database row.
Fixed query
The actual date and time of a match are now saved instead of a date containing only the month and year.
Splitted the configuration to several files and added the relevant interfaces to the module class
Displays all played double league matches for a month.
Added a new dashboard/homepage with informations about the most recent matches and the top ranks of all tournaments.