Issue 206 Removed BuildHelper tab completely

Reason: Achieve consistent UI amongst all project pages. Only the OH
project page has this BuildHelper tab.

This commit includes the south migration to delete buildHelper fields
and contains deletions in python files.
Fixed 950 Fixed a tiny typo in maintainer updates popup
Fixed issue no 944 (http://openhatch.org/bugs/issue944) Made the headers <h3>s bold across the blog by fixing the CSS file
Fixed indentation in project template to better see unmatched opening tags.
Fixed unbalanced tags causing layout issue in project template.
Update url link in handling contributions doc

Closes https://openhatch.org/bugs/issue951
fixes typo
fixes another typo
Revert "fixes another typo"

This reverts commit 67dd8ab1574a4c45b613bc5f553eab6b785e9bed.
Mention 501(c)3 status
Merge pull request #221 from onceuponatimeforever/patch-1

Update url link in handling contributions doc
Renamed the class "tick_progress" to "tick-progress"
Merge pull request #222 from eeshangarg/bug-955-missing-git-check-indicators

Renamed the class "tick_progress" to "tick-progress"
simplify installation instructions to do both 'python manage.py syncdb --noinput' and 'python manage.py migrate' in one
Merge pull request #220 from bmispelon/fix-project-template

Fix project template
changing the style of edit-photo page (removing margins) and fixing overflow
switched "wget" to "curl -O"
Merge pull request #219 from rohitsm/master

Fixed issue no 944 (http://openhatch.org/bugs/issue944)
Clarified usage instructions for man patch
Merge pull request #225 from mbirdi/bug-948-changed-wget-to-curldashO

switched "wget" to "curl -O"; also fixed CLI instructions about man pages