Merge branch 'release/1.6.8' into develop
Fix bug which prevented to display error messages while processing images
Move function rigFileSize from Upload.lc to Common.lc so that this function can be shared between libraries
Remove ImageMagick dependency
Remove ImageMagick preference
Remove references to ImageMagick
Add info regarding the stack file version of the library
Add info regarding the stack file version of the image manipulation library
Add stack version of the image manipulation library
Add info to first card of stack and do cosmetics
Minor tweaks to the image library section
Add field numbers array containing field names as keys and field numbers as values to database query result data
Add info regarding field numbers array in database query result data
Update User Guide for the next release
Change version number
Bump User Guide version number
Bump version number in README
Merge branch 'release/1.6.9'