add: Event Linker engine
add: REST API handler for getting events trees (/rest/events_trees/:rk)
fix: Wrong storage process in engine ; Wrong check process in rest handler
fix: Pass account to storage
add: REST handler to fetch all events trees
Merge branch 'develop' into event-link
add: Introduce new event type: scheduledcheck
add: Introduce widget scheduler
Merge branch 'develop' into event-link
Merge branch 'develop' into event-link
Merge branch 'develop' into event-link
Merge branch 'develop' into event-link
Merge branch 'develop' into event-link
add: Chart on Scheduler widget
Merge branch 'update-highstock-1.3.7' into event-link
Merge branch 'update-highstock-1.3.7' into event-link
add: Handle resize events ; fix: Define cwidget correctly
Merge branch 'update-highstock-1.3.7' into event-link
fix: Define storage for saving records ; add: Fill widget's chart with data
add: Chart title able to navigate in the tree