When deleting links, the js of the default theme separated ids by an escaped space ('+').
There was a trailing '+' after the ids which led to the php code detecting multiple values
even for single values. In combination with the id '0' this could led to no id found at all
and a resulting php error.
this commit fixes the behavior and adds an additional error handling and trimming to the php code.
* The tag list can be sort alphabetically or by most used tag
* Edit/Delete are perform using AJAX, or fallback to 'do=changetag' page
* New features aren't backported to vintage theme
* Add a checkboxes in linklist which display a sub-header containing action buttons
* Strongly rely on JS
* Requires a modern browser (ES6 syntax support)
* Checkboxes are hidden if the browser is old or JS disabled
* Add API settings in `configure.html`
* Fix textarea autoresize
* Load user.css from data folder
* Move fold/expand all button to the right and fix an issue with already folded items
* Reset datetime display to international datetime
* Temporarilly remove JS login panel (need improvement and integration with the plugin system)
* Body background is slightly lighter
* Fix an issue where thumbnails were hidden by description
* Fix an issue where private orange bar wasn't displayed with thumbnails
* Remove the gradient bar behind titles
* Fix empty bookmarklet name in Firefox
