Remove all reference to less/npm in docs and install scripts

docs/performance.rst

@@ -35,11 +35,6 @@ Database
 
 Wagtail is tested on SQLite, and should work on other Django-supported database backends, but we recommend PostgreSQL for production use.
 
-Asset compression
------------------
-
-The Wagtail editor UI is based on `Less <http://lesscss.org/>`_. We aim to provide support for pure-Python Less compilation, to minimise installation requirements, but the official node.js-based compiler is significantly faster. We recommend installing this in production, and you may also prefer to use it to speed up your development environment.
-
 Public users
 ~~~~~~~~~~~~
 

scripts/install/debian.sh

@@ -35,14 +35,6 @@ aptitude update
 aptitude -y install git python-pip nginx postgresql redis-server
 aptitude -y install postgresql-server-dev-all python-dev libxml2-dev libxslt-dev libjpeg62-dev
 
-wget -nv http://nodejs.org/dist/v0.10.20/node-v0.10.20.tar.gz
-tar xzf node-v0.10.20.tar.gz
-cd node-v0.10.20
-./configure && make -s && make -s install
-cd ..
-rm -r node-v0.10.20 node-v0.10.20.tar.gz
-npm install -g less
-
 perl -pi -e "s/^(local\s+all\s+postgres\s+)peer$/\1trust/" /etc/postgresql/9.1/main/pg_hba.conf
 service postgresql reload
 

scripts/install/ubuntu.sh

@@ -33,10 +33,6 @@ aptitude update
 aptitude -y install git python-pip nginx postgresql redis-server
 aptitude -y install postgresql-server-dev-all python-dev libxml2-dev libxslt-dev libjpeg62-dev
 
-aptitude -y install npm
-ln -s /usr/bin/nodejs /usr/bin/node
-npm install -g less
-
 perl -pi -e "s/^(local\s+all\s+postgres\s+)peer$/\1trust/" /etc/postgresql/9.1/main/pg_hba.conf
 service postgresql reload