ENH: help text only visible on button click

Other minor changes
1. Help text is visible below title and above input
2. Alert text is visible below title and above input
3. Font, background changed
4. use <small> element
ENH: remove extra message title and button design

1. The extra message title is removed and the content is now showed as "alert" with background and font color as white using ".help-text" class

2. buttons design changed from default to bootstrap (forgot previously to change)
ENH: change submission Form from POST to GET

1. spc-new-submission url takes item_type as extra paramenter
This is required for GET requests

2. POST is converted to GET to fix dropdown menu of submit button on
header
ENH: change submission form heading dynamically
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!

Conflicts:

	scipy_central/person/templates/person/profile.html
ENH: redesign profile dropdown menu
ENH: add top contributors list to rightsidebar
ENH: add top tags list to rightsidebar
ENH: redesign item.html page

1. add submission image to header using .media class
2. proper usage of <dl>
3. remove unnecessary divs
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
ENH: clean unwanted code in html and css files

Changes to note:
1) remove .container custom width of 80% --uses default bootstrap width

Others:
1) remove all unwanted divs
2) remove unwanted css
ENH: add exception handling on image upload view