Update image for install guide
Merge pull request #2651 from techAPJ/patch-5

Update image for install guide
fixed a spelling benchamarking -> benchmarking
FIX: work better if there is only one LoginMethod

If there is only 1 login method and local logins are disabled
take user directly to the login provider
Merge pull request #2652 from akshaymohite/new_discourse_branch

fixed a spelling benchamarking -> benchmarking
FIX: avatar_url should only be a custom field
fix TOS/welcome sections of Admin Quick Start
make keyboard shortcut help 3 columns vs 2
improve keyboard shortcut help layout
hide sign up button from header on mobile
curse you misaligned semicolon
swapping around heatmap low/high
Merge pull request #2654 from awesomerobot/master

swapping around heatmap/coldmap low/high
FIX: Edit category should use the id always in case two categories have
the same slug.
Add support for `max_posts` query param. Also make it easier to let
Ember support query params for sorting our tables. Just add it in one
place.
Add login buttons to create account template.
FIX: If local logins are disabled, sign up button should not show the
form.
FIX: handle importing usernames that are too short, too long, or have invalid characters
Avoid using to_s when performing String Interpolation
FIX: Metamorph error due to malformed HTML