bootstrap 7.x-2.0-beta3

Changes since 7.x-2.0-beta2:

• Code cleanup
• Improved documentation
• #1932132 by wundo: Calls render before printing variable
• #1942200 by wundo: Implement support for Bootstrap's accordion
• #1926820: Fixes problem when using Bootstrap + Krumo / Ctools - jQuery problem
• #1922580 by jesse.d: Remove protocol of html5shiv to allow both http and https
• #1933238 by heylookalive: Alert should use × instead of 'x'
• #1809836 by danillonunes: theme_item_list() is broken when items variable is an associative array (followup for tests)
• #1911218 by wundo: Adding documentation
• #1932132 by wundo: Adds support for Bootstrap's modal
• #1483660 by windmaomao: Fixes autocomplete throbbing icon being a little off
• by andregriffin: Use media query for tablet/mobile to un-float .form-search when placed within collapsable navigation bar.
• #1911218 by wundo: Changing no stripping class to table-no-striping
• #1911218 by MD3: Add option to turn table-striped class off
• #1850934 by smoothify: Patch to remove unused calls to local tasks.
• #1902744 by TrentHouliston, natted: error displayed when using overlay
• #1902206 by Nicolas Cuny, TrentHouliston: Submenus not visible when navbar collapsed.
• #1852900 by cpliakas, andregriffin, natted: Improve the UX of search elements.
• #1900786 by wiifm: Remove check_plain() around a submit button's #value
• #1892900 by sjbassett, lyes : Check type is set.
• #1892924 by sjbassett: Fix for vertical tabs form item alignment.
• Removing duplicated version line from bootstrap.info
• #1864450 by nrm604 : chang cdn urls so works with https
• #1865998 by José San Martin: Variables in page.tpl.php should be enclosed in !empty()
• #1864490 by laurent_ : bad declaration of the custom theming functions
• #1863844 by maxtorete: Add specific class to main div container on page.tpl.php