Added comments to Askbot stylesheets

templates/sass/discussion/_answers.scss

templates/sass/discussion/_askbot-original.scss

templates/sass/discussion/_badges.scss

templates/sass/discussion/_discussion.scss

templates/sass/discussion/_form-wmd-toolbar.scss

templates/sass/discussion/_forms.scss

templates/sass/discussion/_modals.scss

templates/sass/discussion/_profile.scss

templates/sass/discussion/_question-view.scss

templates/sass/discussion/_questions.scss

templates/sass/discussion/_sidebar.scss

templates/sass/discussion/_tags.scss