Better handling of the quiet default

which is not the default for the command line,
causing all sorts of annoyance.
Add checks for CSV.load and Marshal.load

and combine with YAML checks
Use relative paths for files by default in JSON

Tab format needs to use absolute paths to work properly with Jenkins.
HTML format does its own thing but always displays relative paths in
expanded warnings. Text and CSV reports do not include file names.
Test relative/absolute paths in reports
Remove "timestamp" field from JSON report

it is the same as "end_time"
Handle stabby lambdas with no arguments

should fix #331
Clean up CVE checks/messages in CheckSQL
Merge branch 'clearer_handling_of_quiet_default'
Merge branch 'combine_deserialize_checks'
Merge remote-tracking branch 'origin/relative_paths_by_default'

Conflicts:
	lib/brakeman.rb
Merge branch 'block_args_for_stabby_lambdas'
Merge branch 'remove_timestamp_from_json'
Merge branch 'cleanup_sqli_cves'