Merge pull request #22 from stas-tanko/andrew

Andrew
add users controller
finished users controller, added tests, added cancancan
new_design
Merge pull request #23 from stas-tanko/stas

Stas
merge
merge
fix_merge
fix_merge
Merge pull request #24 from stas-tanko/alex

Alex
fix
delete_paperclip
updated tests for user controller
Merge pull request #25 from stas-tanko/alex

Alex
merge updates
remove temporary files
FixView, add task controller, add some validates
Merge pull request #26 from stas-tanko/fixview

FixView, add task controller, add some validates
updated sign in/up pages
Merge pull request #27 from stas-tanko/stas

updated sign in/up pages