2020 list of minor bugs and enhancements

[matthiku]

• (1) Error 404 (Invalid URL, eg. "/cspot/plans//edit?id=1763") after inserting new item into plan
• (2) In Presentation view, show Youtube play button for song items
• (3) Error after trying to add (upload) new images to items
• (4) Error 500 after creating a new plan and when trying to sort items in the file list
• () ESC key in presentation mode fails to bring you back to plan overview
• () Presentation: plan cache not correctly deleted when song or plan was edited
• () Scripture Text View: Allow for side-by-side view of 2 translations
• () Edit Plan Type Details: Incorrect show of start- and end-times on Firefox
• () When clicking on a day on the calender on the home page, the plans should be shown as a list
• () Implement FTS: https://www.digitalocean.com/community/tutorials/how-to-improve-database-searches-with-full-text-search-in-mysql-5-6-on-ubuntu-16-04?utm_medium=email&utm_source=IaaN&utm_campaign=11092017