fix(build): exclusion of table component when tab is active

If there is still a table.css present in dist/components, it will be included in semantic.css.

This is caused by a collision in the globbing mechanism: 'tab' is included in the word 'table', so table.css is included in the package task.

Fixes #2118

tasks/build/css.js

@@ -99,7 +99,12 @@ function pack(type, compress) {
     concatenatedCSS = compress ? filenames.concatenatedMinifiedCSS : filenames.concatenatedCSS;
   }
 
-  return gulp.src(output.uncompressed + '/**/' + globs.components + ignoredGlobs)
+  let src = output.uncompressed + '/**/' + globs.components + ignoredGlobs;
+  if (globs.components.indexOf('table') < 0 && globs.components.indexOf('tab') > 0) {
+    src = [src, '!' + output.uncompressed + '/**/table.css'];
+  }
+
+  return gulp.src(src)
     .pipe(plumber())
     .pipe(dedupe())
     .pipe(replace(assets.uncompressed, assets.packaged))