Update to bootstrap 3.3.1 and rtl 3.2.0

Signed-off-by: Michal Čihař <michal@cihar.com>
Fix logo rendering

Signed-off-by: Michal Čihař <michal@cihar.com>
Use custom Bootstrap build without Glyphicons

We will replace these with Awesome font, which provides more glyphs we
need.

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove map files, we do not really need them

Signed-off-by: Michal Čihař <michal@cihar.com>
Include Font Awesome

Signed-off-by: Michal Čihař <michal@cihar.com>
Replace Glyphicon icons with Font Awesome ones

Also standardize some of icons used across the application (eg. for
editing or deleting).

Signed-off-by: Michal Čihař <michal@cihar.com>
Icons for social authentication

It makes it easier to spot the right provider.

Signed-off-by: Michal Čihař <michal@cihar.com>
Document changes

Signed-off-by: Michal Čihař <michal@cihar.com>