updated contentblob to pdf conversion test to check the size falls within a range, to handle variations caused by libraries used for the conversion changing
updated contentblob to pdf conversion test to check the size falls within a range, to handle variations caused by libraries used for the conversion changing

HITS-SDBV/nmtrypi-seek,HITS-SDBV/seek,HITS-SDBV/seek,BioVeL/seek,Virtual-Liver-Network/seek,aina1205/nmtrypi-seek,HITS-SDBV/nmtrypi-seek,SynthSys/seek,HITS-SDBV/seek,kjgarza/frame_experiment,HITS-SDBV/nmtrypi-seek,SynthSys/seek,stuzart/seek,aina1205/nmtrypi-seek,aina1205/nmtrypi-seek,stuzart/seek,stuzart/seek,BioVeL/seek,kjgarza/frame_experiment,aina1205/SysMO-DB-seek,Virtual-Liver-Network/seek,aina1205/nmtrypi-seek,SynthSys/seek,HITS-SDBV/nmtrypi-seek,SynthSys/seek,aina1205/SysMO-DB-seek,BioVeL/seek,Virtual-Liver-Network/seek,HITS-SDBV/seek,Virtual-Liver-Network/seek,aina1205/SysMO-DB-seek,kjgarza/frame_experiment,BioVeL/seek,kjgarza/frame_experiment