Fixes missing s:window and aqua declarations

Adds missing declarations for s:window in the Tomorrow, Tomorrow Night
Bright, Tomorrow Night Blue, and Tomorrow Night Eighites themes. For the
Tomorrow Night Bright and Tomorrow Night Eighties themes, the s:window
value was set to the same value as was set in Tomorrow Night. For the
Tomorrow Night Blue and Tomorrow themes, the current line color as
specified at https://github.com/ChrisKempson/Tomorrow-Theme was used

Also added a missing aqua declaration to the Tomorrow theme. This
was set to the value specified in the above link.
support for signcolumn & showmarks
SignColumn is not 7.3 specific
Fixing Tomorrow theme
Merge pull request #14 from Elland/master

Fixing the Tomorrow vanilla theme
Merge pull request #11 from mkomitee/master

Added support for signcolumn & showmarks
Merge branch 'master' of github.com:chriskempson/vim-tomorrow-theme

* 'master' of github.com:chriskempson/vim-tomorrow-theme:
  Fixing Tomorrow theme
  SignColumn is not 7.3 specific
  support for signcolumn & showmarks

Conflicts:
	colors/Tomorrow.vim
changed "fafafafa" to "fafafa" in s:background
changes todo hl color to yellow
Merge pull request #16 from joonro/patch-1

changed "fafafafa" to "fafafa" in s:background
Keep up to date with the main Repo i.e.
(https://github.com/chriskempson/tomorrow-theme)
Merge pull request #18 from suvash/master

Keep up to date with the theme files in the main Repository
Highlight Python loops and exception handling
Merge pull request #19 from Gautier/master

Highlight Python loops and exception handling
add vim-gitgutter support
merge fix
Merge branch 'fix'

Conflicts:
	colors/Tomorrow-Night-Bright.vim
	colors/Tomorrow-Night.vim