[slate] tweaks to window hints

using version from https://github.com/jigish/slate/pull/409
[vim] solarized instead of railscasts
[vim] tell syntastic to provide jump errors list
[vim] tell dispatch to ignore bundler/vroom
[vim] replace Tabular with EasyAlign + TableMode
[vim] sensible Y mapping
[vim] clear auto-pairs mapping
[vim] added gundo.vim
[vim] some useful mappings for searching
[vim] PrettyPrintJson command
[vim] attempt to use vim-easyclip
[vim] move easyclip mappings to proper section
[vim] use forked vim-table-mode