timespan for positions in the resume

Signed-off-by: Mohamad Ahmadi <mohamadhasan.ahmadi@gmail.com>
Merge branch 'dev_resume_timespan'
navigation for the resume + bootstrap spyscroll + bootstrap affix

Signed-off-by: Mohamad Ahmadi <mohamadhasan.ahmadi@gmail.com>
Merge branch 'dev_resume_sidebar'
smooth scroll for resume navigation

Signed-off-by: Mohamad Ahmadi <mohamadhasan.ahmadi@gmail.com>
Merge branch 'dev_resume_sidebar_smooth_scroll'
Merge branch 'master' into gh-pages