layout works in IE
[Firefox] Removing 'take me back to my notes' from help and options.
Make toggling tags case-insensitive

Also, just use a regex to avoid splitting and joining.

fixes #181
Don't add pin if already prefixed with exclamation point.

fixes #180
Scroll editor on small screens.
Merge pull request #183 from HaleyB-E/internetExplorer

Fix layout in IE
[Firefox] Adding larger icon.
Optimize fixHeight.
Better handling of small screens.

Set bigger min-width
Allow horizontal scrolling when needed.
[Firefox] Sidebar is now wide enough.
[Firefox] Icon is correct on addons page even while disabled.
Merge pull request #184 from deannah/firefoxFix

Firefox Bugfixes
Numerous micro-optimizations

Make note rendering faster.
Make sorting while lazy-loading work.