use --message-limit in table output

this changes the default width from 80 to 100
add new option `--table-width` for text report
Remove fuzzy matching for CheckModelAttrAccessible

in practice, this ends up with annoying false positives
Adjust CheckModelAttrAccessible message
Fix CheckModelAttrAccessible tests messages
Merge pull request #390 from presidentbeef/tighten_dangerous_attributes

Remove fuzzy matching for attr_accessible attributes
always apply --table-width if given
Merge pull request #387 from ssendev/patch-1

Add option to set table width limit in text output
Update CHANGES
Assume `to_json` to be safe in Rails 4
Add tests for `to_json` in Rails 4
Merge pull request #392 from presidentbeef/to_json_escaped_in_rails4

Do not warn about XSS with `to_json` in Rails 4
Add the tests for to_json XSS in Rails 4

this was supposed to be part of 5ffafd809fbfdd0481609210443fcec7fd5a08b8
Update CHANGES

`to_json` is safe in Rails 4
Do not attempt to load custom HAML filters
Bump to 2.1.2
Merge branch 'presidentbeef-v2.1.2' into noahd1-smoke-production

Conflicts:
	lib/brakeman/version.rb