Allow exact filtering by surouding text by quotes

Fixed #70
Use the new "all" value for state to get issues and PRs

Fixed #63
More space for the loading spinner in the create issue modal

Fixed #74
Split issue template folder in subfolders
Simpler way to pass params to deferrable urls

+ allow to use another tag than "div"
Defer load of big lists of user to filter
Spaces around icon in issues-list time block