Makes hint text center on active monitor

Makes the annotation hint text appear in the center of the active monitor.
Beta support
Merge pull request #209 from michalx2/master

Add MediaFire support
Few changes
MediaFire url format changed, about form update
MediaFire encode filename in url, only report upload progress
MediaFire long url is optional setting
Command line args supports all hotkey jobs now (-RectangleRegion, -ScreenColorPicker etc.)
Added TrayMiddleClickAction setting, TaskSettings changes
Magnifier is now circle
Region changes
Updated hint text to center correctly on the primary monitor.
Merge pull request #208 from Petethegoat/master

Makes annotation hint text center on primary monitor
RectangleAnnotate changes
Added delete file. Fix #210
Changed Linq expression to built in function
Added default visibility to false and added DialogBox
Merge pull request #211 from WebFreak001/master

Fixed #210
Added icon to delete file
Added remember main form position setting