Work on TM chapter
Work on TransactionManager chapter
work on TM
Fixed table overflow
work on TM configuration
Work on TM diagram
prepared and no_join diagrams
assembly line diagrams and abort participant
work on Configuration section
corrected bullets, added 'profiler'
TM properties
Added GroupSelector + minor edits
Work on chapter 9, Transaction Manager
Removed unnecessary console logging

Removed System.out.println statement.
Merge pull request #75 from vsalaman/patch-1

Removed unnecessary console logging