Two themes based on Bootstrap 3

Here are two themes for Miniflux based on Bootstrap 3 : a light version and a dark version.

The main goal was to have the "mark as read" button always in the same place so you can click 10 times to close 10 items.

For the dark version, I used Cyborg from Bootswatch (http://bootswatch.com/cyborg/) licensed under the Apache License v2.0.

Less files are included.

Hope you like it !

Some screenshots :

![minitheme-light](https://f.cloud.github.com/assets/1922454/1168347/a3de6e0c-209e-11e3-9cea-2253acd66a60.png)
![minitheme-light-small](https://f.cloud.github.com/assets/1922454/1168348/a3e1c728-209e-11e3-884a-75d26041d41c.png)
![minitheme-dark](https://f.cloud.github.com/assets/1922454/1168345/a3b0a580-209e-11e3-8fe7-6db99edf6ef7.png)
![minitheme-dark-medium](https://f.cloud.github.com/assets/1922454/1168346/a3d9dfb8-209e-11e3-8a42-e81847bf6121.png)