Merge branch 'release/v0.5.3' into develop
deleted not working tests
added mails if enrolled tournament gets deleted
added memcachier and dalli
added to_s method
added specs for prvacy
added private boolen to user
deleted require for capybara
deleted privacy again
added miniprofiler to dev env
set organising tournaments as instance variable of tournaments which are organnised by current_user instead of calling a method for each
put get_clubs to helper, because it is only needed in one view
refactored to fast is_owner method
get organised tournaments from user
changed li to own tournaments if signed in
improved logging
add cache digest and memoist gem
delted tournaments from index function, because this function remains unused
deleted unused query
only validate tournament on create