Fixing layout of 'contributing' section

Onesixth turned to quarter, better font size for names
Fixing 'about' spelling and sentence structure #23'
Improving footer section
Added photo
Merge pull request #59 from krisipironkova/master

Added photo
Merge pull request #57 from mbelchev/master

Improving footer section
Added small gci students guide
Fixing some bugs in footer section
Merge pull request #60 from mbelchev/master

Fixing some bugs in footer section
Center footer box content
Merge pull request #62 from mbelchev/master

Center footer box content again
Merge pull request #1 from fossasia/master

Latest
Added photo
Added photo
Merge pull request #63 from amroto/master

Added photo
Added photo
Added photo
Added photo
Merge pull request #64 from amroto/master

cropped image
Added mail form