BUG Reapply fix for cms crashing due to History.js blindly appending slashes to end of url
Merge pull request #3391 from tractorcow/pulls/3.1/fix-history-js

BUG Reapply fix for cms crashing due to History.js blindly appending slashes to end of url
Don't block rewriting .php URLs
Merge pull request #3394 from simonwelsh/stupid-htaccess

Don't block rewriting .php URLs
Fixing inconsistent use of RewriteRule in docs and install.php5

It currently doesn't match the .htaccess that comes with a checkout of
silverstripe-installer.
Merge pull request #3395 from halkyon/rewriterule_consistency

Fixing inconsistent use of RewriteRule in docs and install.php5
NEW: Sanitise task name in runTask
BUG Reapply fix for cms crashing due to History.js blindly appending slashes to end of url
Added 3.1.6-rc3 changelog
Add HTTP status code for $databaseConfig error (fixes #3392)
Merge pull request #3399 from kinglozzer/pulls/dbconfig-response-code

Add HTTP status code for $databaseConfig error (fixes #3392)
Added HHVM to .travis.yml
Merge branch 'Nyholm-patch-1' into 3.1

Closes #3292
Merge remote-tracking branch 'origin/3.1.6' into 3.1
FIX: Keep ImagickBackend  API consistent with Image_Backend interface and fix color formatting.
FIX: Correctly paddedResize images in IMagickBackend.
FIX: Compression quality setting now takes effect.

fixes #3333
FIX: Image_Backend -> croppedResize function doesn't include a backgroundColor, therefore this shouldn't be assumed in ImageMagick->croppedResize
Merge pull request #3400 from jedateach/fixes/imagick-crop-notice

FIX: Image_Backend -> croppedResize function doesn't include a backgroundColor
Merge pull request #3334 from jedateach/fixes/imagick-padresize

Image Magick PaddedResize fix
test all generate methods and formatted image deletetions