Update Grails.gitignore to include default files

Update Python.gitignore

Ignore user-specific .booproj files

Update Dart.gitignore to trim stray whitespace

Removed space from end of line which prevented the `pubspec.lock` from being ignored.

Update Unity gitignore to not commit user preferences

Update URL in nanoc.gitignore

new site Nanoc

Updated rules of 'VisualStudio.gitignore' about Web workbench add-on.

Improve Android .gitignore comments

Only files under /web-app/WEB-INF/classes (build output) should be ignored by Git. Grails generates a few default (unchanging) files (applicationContext.xml, sitemesh.xml, a bunch of *.tld) that need to be there for some plugins to function properly (e.g., grails war).

Update Cloud9.gitignore

fixed handling of nuget packages

Ignore sensitive data

Ignore grunt and lcov build files in Node projects

Add output directory of sbteclipse plugin, which is ".target" directory.

Add "dist" and ".cache" folders for Play 2.2.x

Added SCons.gitignore

Update to Magento 1.8.x

added node_modules

Added the new upload directories and ignore the cache directory completely

The next version of Cloud9 will use a top-level .c9 folder in the workspace for settings and metadata.

which is ".target" directory.

Link: http://www.playframework.com/documentation/2.2.x/Anatomy

Rails: Ignore config/secrets.yml

Remove duplicate rule