Plugins: updated changelogs for v2.31 release:

ToolStatus: 1.9
 * Added PNG images
 * Fixed search box fonts
 * Fixed plugin settings state (disable/enable)
 * Updated Searchbox UI
 * Updated Searchbox commands
 * Updated plugin settings
 * Removed BMP images

Updater: 1.4
 * Added PNG images
 * Fixed offline crash
 * Improved background update check
 * Removed BMP images

OnlineChecks: 1.4
 * Added upload progress
 * Updated UI



git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5357 21ef857c-d57f-4fe0-8362-d861dc6d29cd
check for NULLs when releasing objects

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5358 21ef857c-d57f-4fe0-8362-d861dc6d29cd
Plugins: fixed PNG handling

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5359 21ef857c-d57f-4fe0-8362-d861dc6d29cd
Toolstatus: fixed subclass cleanup

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5360 21ef857c-d57f-4fe0-8362-d861dc6d29cd
ToolStatus: Fixed Toolbar tooltips for image-only items; Added searchbox imagelist transparency

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5361 21ef857c-d57f-4fe0-8362-d861dc6d29cd