fix homepage header overflow on small screens
code prettify

add “+” new homophones header nav link for admin
change “nag expander” text from `bars` to “Menu”
change nav search placeholder from “Search” to “letters”
upgrade cancan gem to cancancan
add definition hover indicator to card-footers
update database.yml
improve home & footer text & ui
no admin accounts exist message at login screen
fix word set form styles
Merge pull request #30 from TSMMark/UI/30-better-indicators

UI: better indicators