ENH: redesign profile page

1. add gravatar image
2. remove default bootstrap table margins
3. display profile summary as table
4. remove .spc-page-title class from heading
5. page header now only contains title!
ENH: redesign profile dropdown menu
ENH: add top contributors list to rightsidebar
ENH: add top tags list to rightsidebar
ENH: show submission summary as table in item.html

1. previously dl is used and in wrong way (to just condense it)
2. Since, tables offer better compatibility, table has been choosed.
ENH: display submission type with image

1. one-person-result.html, one-search-result.html contains totally new code.
2. edit in remaining html pages are done to fit the above pages code
3. unnecessary css definitions are removed in .less (.css is compiled)
ENH: image upload form moved into bootstrap modal

1. Image upload button is placed below description using bootstrap modal
2. .no-lead class added to provide padding on the top
MAINT: improve image upload message
BUG: add media_root for image uploads in debug mode

1. in debug=true mode, images don't get uploaded unless media root is present
MAINT: bold keywords in field labels
MAINT: Upper case first letter of keywords
ENH: write markup-help.html from scratch using tables
ENH: copyrights info move from footer to rightsidebar bottom
ENH: remove btn-block class in all buttons of site

Apart from removing btn-block,
1. float submit button to right in new-item.html
MAINT: html cleanup - remove unwanted code