Update various NodeJS dependencies

[netweb]

Various NodeJS dependencies need updating:

 grunt-check-dependencies  ~0.11.2  →  ~0.12.0 
 grunt-contrib-clean        ~0.6.0  →   ~1.0.0 
 grunt-contrib-copy         ~0.8.0  →   ~1.0.0 
 grunt-contrib-cssmin      ~0.13.0  →   ~1.0.0 
 grunt-contrib-jshint      ~0.11.2  →   ~1.0.0 
 grunt-contrib-uglify       ~0.9.2  →   ~1.0.0 
 grunt-rtlcss               ~1.6.0  →   ~2.0.1 
 grunt-sass                 ~1.0.0  →   ~1.1.0 
 matchdep                   ~0.3.0  →   ~1.0.1 

[netweb]

In 5973:

Build Tools: Update grunt-contrib-cssmin from 0.13.0 to 1.0.0

See #2918

[netweb]

In 5974:

Build Tools: Update grunt-contrib-cssmin from 0.6.0 to 1.0.0

See #2918

[netweb]

In 5975:

Build Tools: Update grunt-contrib-copy from 0.8.0 to 1.0.0

See #2918

[netweb]

In 5976:

Build Tools: Update grunt-contrib-copy from 0.8.0 to 1.0.0

This changeset fixes the "my bad" r5975 commit where the version was accidentally committed as 0.1.0 instead of 1.0.0

See #2918

[netweb]

In 5977:

Build Tools: Update grunt-contrib-jshint from 0.11.2 to 1.0.0

See #2918

[netweb]

In 5978:

Build Tools: Update grunt-contrib-uglify from 0.9.2 to 1.0.0

See #2918

[netweb]

In 5979:

Build Tools: Update grunt-check-dependencies from 0.11.2 to 0.12.0

See #2918

[netweb]

In 5980:

Build Tools: Update matchdep from 0.3.0 to 1.0.1

See #2918

[netweb]

In 5981:

Build Tools: Update grunt-sass from 1.0.0 to 1.1.0

See #2918

[netweb]

In 5982:

Build Tools: Update grunt-rtlcss from 1.6.0 to 2.0.1

Fixes #2918

[netweb]

In 5983:

Build Tools: Renamed grunt-rtlcss option options.config to RTLCSS v2.x options.opts option

See #2918

[netweb]

In 5992:

Build Tools: Update grunt-contrib-watch from 0.6.1 to 1.0.0

See #2918

[netweb]

In 5999:

Build Tools: Update grunt-legacy-util from 0.2.0 to 1.0.0

See also: ​https://github.com/gruntjs/grunt-legacy-util/compare/v0.2.0...v1.0.0

See #2918

[netweb]

In 6000:

Build Tools: Revert [5999] grunt-legacy-util update, from 0.2.0 to 1.0.0

This changeset reverts the above change as I missed the 1.0.0 recommended ​change to use require('child_process').spawn over grunt.util.spawn. Per NodeJS docs ​here and ​here for NodeJS versions 5.x and 4.x respectively this needs some more testing and changes to the Grunt phpunit task and multi task.

Another option per ​grunt-legacy-util #10 is to switch to ​cross-spawn-async

Both above options will require *nix and Windows testing.

6000 is the natural number following 5999 and preceding 6001.

See #2918