Remove escaping for @external names.

fixes #106
Merge pull request #107 from dankurka/remove_external_escaping

Remove escaping for @external names.
fix issue #86 : Converter is broken with certain if conditions
Merge branch 'master' of github.com:jDramaix/gss.gwt into jd_issue_86

Conflicts:
	src/test/java/com/google/gwt/resources/converter/Css2GssTest.java
Merge pull request #109 from jDramaix/jd_issue_86

fix issue #86 : Converter is broken with certain if conditions
fix issue #103: defining @url in conditionals fails build
Merge pull request #110 from jDramaix/jd_issue_103

fix issue #103: defining @url in conditionals fails build
Enable autoconvert in GssResourceGenerator.

This is still guarded by a flag and needs to be turned on by each app.

fixes #108 #114

Conflicts:
	src/main/java/com/google/gwt/resources/converter/Css2Gss.java
Merge pull request #111 from dankurka/auto_convert

Enable autoconvert in GssResourceGenerator.
fix issue #104: constant names with hyphen break build
fix test
Merge pull request #117 from jDramaix/jd_fix_104

fix issue #104: constant names with hyphen break build
Add @alternate annotation on @sprite rules.

fixes #119
Merge pull request #120 from dankurka/missing_alternate

Add @alternate annotation on @sprite rules.
Remove pseudo classes from @external
Merge pull request #122 from dankurka/pseudo_classes

Remove pseudo classes from @external
fix issue #124: @eval breaking types
remove file
remove file
Merge pull request #125 from jDramaix/jd_fix_124

fix issue #124: @eval breaking types