UI changes

[FloEdelmann]

• moved "About" and "Check connection" from navigation drawer to the actionbar (but never shown as action)
• added padding on many places
• changed font in statusbar (that shows profile and connection status)
• changed font in small headings (on "Profile edit", "Device info" and "Currently playing" screens)
• changed the way that frontends, NICs and HDDs are loaded. Now, everything that belongs to style is stored in XML files, Java is not involved anymore.
• revamped "Profile edit" screen

I added some English strings that are now used in the "Profile edit" screen. These are also already translated to German.

I also changed the library paths from Windows (\) to UNIX style (/) in project.properties. I hope this does not break anything... But otherwise, I had not been able to build it myself because I'm working in a Linux environment.

[sreichholf]

Looks good! Thanks for your effort!

[FloEdelmann]

wow, that was fast :+1:

[sreichholf]

Already found a bug in the device info ;). Supposedly onResume() (after leaving standby e.g.) the "list"-contents will not be cleared but "doubled", or tripled, depending on how many times it's being called :).

If you have the time feel free to fix it, otherwise i may do that myself on the weekend :)

[FloEdelmann]

see #49