Merge pull request #924 from millmanorama/release-3.1.1

chnages to timeline userdocs to reflect modified cluster expansion UI
updated report logo
Updated docs for services and utilities
Updated docs for services and utilities
reports: force new generator logo, do not dislpay raw tool output in report, change alignment to left instead of center for HTML
Merge branch 'release-3.1.1' of github.com:sleuthkit/autopsy into release-3.1.1
removed extra heading rows from Excel report so that the report is just the table data
Remove use of deprecated method in Python sample and make easier to test
Merge pull request #926 from rcordovano/release-3.1.1

Remove use of deprecated method in Python sample and make easier to test
updated to version 3.1.1 and associated Library versions
Merge branch 'release-3.1.1' of github.com:sleuthkit/autopsy into release-3.1.1
add read status to android SMS parser.  From pull request #905 @dkarpo. Added code to have read displayed as string and not integer
Made splash logo smaller
Merge branch 'release-3.1.1' of github.com:sleuthkit/autopsy into release-3.1.1
made use of new getDisplayString in attribute, fixed report bug if attributes were not defined, made cell phone attributes more consistent
fixed splash screen with new dimensions
fix usage of read status attribute
Merge pull request #933 from millmanorama/read_status_fix

fix usage of read status attribute
update to ControlsFX 8.20.8