Core: store text in the history also for delete queries

Also carry it with history_remove_event
Organism alarms API: add return
Organism alarms: also store text in the log
Organism alarms: select log
wx GUI: rename menu View to Logs
wx GUI: make logs more dynamic and use DataViewListCtrl

Makes #274 obsolete
wx Copypaste: fix typo
wx Dbsearch: update menu insertion
wx Texthistory: reorganize with classes
wx Alarms: separate Alarms menu and reorganize with classes
wx Tasklist: merge show menu item into Occurrences menu
wx Tasklist: refactorization
Init wx Alarmslog plugin

Fixes #181
Remind bugs #278, #279 and #280