Merge branch 'release/1.1.0' into develop
LA-13 #time 15m Add home page

Update header partial
LA-13 #time 15m Add home page

Update style of  home page
LA-3 #time 5m Admin creates and manage categories

Fixed paperclip gem for photo with imagemagick
LA-4 #time 5m Admin creates and manage authors

Fixed paperclip gem for photo with imagemagick
LA-5 #time 5m Admin creates and manage books

Fixed paperclip gem for photo with imagemagick
Bump version 1.2.0
Merge branch 'release/1.2.0'