** Moved the default caret under the drop-down button text to accommodate with fixed-width restrictions **

Updated documentation. In short: #380, #365, #381, #377, #385, #384, #388, #302, #305, #391, #374, #397, #400, #375, #383, #301, #382, #386, #387, #404.

Added Bootstrap 3.0 files (js + css + fonts); updates: search field to match 3.0 markup in JS, LESS template, HTML examples.

Moved CSS declarations into separate LESS file. Filter will now be
rebuild, too.

Fixed #82. Added beta js and demo html. The "new" multiselect will be more structured but hopefully offering the same possibilities with better performance.