Smart Search > Search Filters: moved Delete button. Fixes #5075.

Moved Delete button to the right
See http://issues.joomla.org/tracker/joomla-cms/5062
Smart Search > Content Maps: moved Delete button. Fixes #5074.

Moved Delete button to the right
See http://issues.joomla.org/tracker/joomla-cms/5062
Smart Search > Indexed Content: Delete & Purge buttons. Fixes #5073.

Moved Delete & Purge buttons to the right
See http://issues.joomla.org/tracker/joomla-cms/5062
Fix PHP warning for trying to loop over false variable

Search bots are filling my error log because there was no proper check of the variable before looping over it. Note: I just added the same check which already exists in view.html.php and which was missing here.
Added asset entry when installing component from discovery. Fixes #4793.