First tries at implementing account support for Pica
Merge pull request #1 from raphaelm/master

Get trust store change from main fork
Account and prolonging support for Pica, working in Kiel. No
reservations yet.
Reduced amount of information shown in account view (reminders only if
there are any, no reservations, "Verlängerungen" shortened to "x verl."
iOPAC: now supports different error messages when prolonging
Pica: Support for showing reservations in account view and canceling
them
Merge pull request #195 from johan12345/master

Account support for Pica (Kiel) and small fix for iOPAC (Schleswig)