(Settings Single Column) Refactor structure and apply new common CSS

- Refactored markup to apply new CSS for responsive horizontal and vertical centering
- Tweaked value of top spacing for sticky buttons
Merge branch 'master' into chore/single-column-layout
(Settings, Single-Column) Refactoring of URL section

- Removed unnecessary importing of deprecated bootstrap-fontpicker.min.css
- Changed google anchor link to a bootstrap button link and applying custom style (removed old one)
- Refactoring of URL markup and layout to be single column
- Applying new section styling to URL section
- Copy change to URL label
(Settings, single-column) Refactor scrolling section

- Apply localization to section header
- Revised markup and layout for scrolling section
- Removed unnecessary css class on refresh input element
(Settings, single-column) Refactor Column/Row Format section

- Translation for heading
- Moved row color and alt row color into this section
- Revised layout
(Settings, single-column) Refactor header format section

- Revised localization to put font styling titles into a common object as they are now generic
- Made the necessary code tweak in regards to sample text localization
- Revised HTML for header format section
(Settings, single-column) Refactor data format section

- Localization changes
- Refactor HTML markup and layout
(Settings, single-column) Refactor other section

- Localization changes
- Refactor HTML markup and layout
(Settings, single-column) Form grouping cleanup

- Revising structure to ensure .form-group is consistently applied for grouping form labels and elements together
(Settings, single-column) Carry over tooltips from previous Gadget

- Applied all HTML markup for applying the tooltips
- Modified localization to apply tooltip copy for all instances carried over from previous Gadget
- Modified instantiation of of tooltips to include these additional tooltips
(Settings, single-column) Fix to url validation message

- New localization changed the field name of the object for url validation, corrected this
(Settings, single-column) Revised URL validation handling

- New checkbox to enable/disable url validation
- Localization for revised valid_url property and added copy for new checkbox field
- Logic for now prompting user with a checkbox to enable/disable url validation based on a failure to validate a URL
(Settings, single-column) Re-factored Scroll By

- Revised HTML markup for Scroll By to now be a set of two radio toggle buttons instead of a select field
- Re-factored all logic regarding Scroll By to reflect it being radio toggle buttons
(Settings, single-column) Cleanup w/ JSHint, JSLint, Inspections
Merge pull request #4 from Rise-Vision/chore/single-column-layout

Single column layout