ID-421 Fix relative bootstrap imports.

Working in this repo because the compiler will treat these references as relative and find the bootstrap directory. But it fails building LESS from another project.

Author: halfninja

docs/assets/css/config-options.less

@@ -1,5 +1,5 @@
-@import (reference) 'bootstrap/less/variables.less';
-@import (reference) 'bootstrap/less/mixins.less';
+@import (reference) '../../../bootstrap/less/variables.less';
+@import (reference) '../../../bootstrap/less/mixins.less';
 @import (reference) '../../../less/variables.less';
 @import (reference) '../../../less/mixins.less';
 

docs/assets/site/docs-site.less

@@ -1,5 +1,5 @@
-@import (reference) 'bootstrap/less/variables.less';
-@import (reference) 'bootstrap/less/mixins.less';
+@import (reference) '../../../bootstrap/less/variables.less';
+@import (reference) '../../../bootstrap/less/mixins.less';
 @import (reference) '../../../less/variables.less';
 @import (reference) '../../../less/mixins.less';
 

docs/assets/site/site.less

@@ -1,5 +1,5 @@
-@import (reference) 'bootstrap/less/variables.less';
-@import (reference) 'bootstrap/less/mixins.less';
+@import (reference) '../../../bootstrap/less/variables.less';
+@import (reference) '../../../bootstrap/less/mixins.less';
 @import (reference) '../../../less/variables.less';
 @import (reference) '../../../less/mixins.less';
 

less/default-theme.less

@@ -1,5 +1,5 @@
-@import (reference) 'bootstrap/less/variables.less';
-@import (reference) 'bootstrap/less/mixins.less';
+@import (reference) '../bootstrap/less/variables.less';
+@import (reference) '../bootstrap/less/mixins.less';
 @import (reference) 'variables.less';
 @import (reference) 'mixins.less';