Fixes to trash

[32GBRat]

I have tried running the dev branch of Errands and I have found few problems with trashing items. I have made fixes to these issues and made them into this PR.

These fixes include:

• Trashed tasks not being displayed on load. Refresh by trashing another task was needed to show them correctly.
• Restoring tasks was failing because of call to a non-existent method.
• Sidebar not being updated to reflect changes made by trashing task.

I have also noticed that tasks after being recovered are marked as completed. I wasn't sure if that is intended or not so I left that in.

[mrvladus]

Thank you! I didn't have time today to get to fixing trash :) Just made State class today, now it much easier to access stuff.

tasks after being recovered are marked as completed

It's intended, because tasks that moved to trash automatically marked as completed, and when they are restored, they still marked as completed.