Remove useless regex for redirecting /ghost -> /ghost/
Fix Firefox <select> height issue

closes #1109
- Use moz-specific selector to make <select> elements use auto height
Respect subdirectory in authenticate middleware
Merge pull request #2223 from mjbshaw/fix-subdir

Respect subdirectory in authenticate middleware
Merge pull request #2224 from mjbshaw/useless-regex

Remove useless regex for redirecting /ghost -> /ghost/
Merge pull request #2228 from PaulAdamDavis/master

Fix Firefox <select> height issue
Updated pageUrl helper to page_url

issue #2216