Moved "About" menu item to the bottom of menu.

Reason: "About" are usually last items in menus.
[N9] Added support for toggling inverted style on Harmattan.

Some UI elements and icons need to be tweaked to take style into account.
[N9] Updated all UI elements, except icons, to follow inverted style.
[N9] Updated all icons to follow inverted style.
[N9] Removed unused icon.
Merge pull request #50 from leppa/inverted-harmattan

Inverted style on Harmattan
Fix for calendar that fahrplan could be compiled on desktop again.
slots to signal where possible
Fixes #51 - Bug with Departuretime.
[N9] Handle time the same way as in Symbian - should be more reliable.
Merge pull request #53 from leppa/bug-51

Fix for one hour offset bug
Compilation fix: #elseifdef is not understood by all compilers.

Replaced it with #elif defined(), which is.
[N9] Replaced version for all com.nokia.meego imports from 1.0 to 1.1.

com.nokia.extras are already importing version 1.1 so Fahrplan wouldn't
work anyway if only Qt Components 1.0 would be present.
[BB10] Fix: via station wasn't shown in calendar event title.
[N9] Created SettingsPage.

Moved GPS opt-in/out and inverted theme settings there.
[SYM,BB10] Created SettingsPage.

Moved GPS opt-in/out and inverted theme settings there.
Updated translations.
Merge pull request #54 from leppa/settings

Settings Page
Compiled translations
Allows to set useragent for http requests, also updated sbb.ch id to work again.
Fixes #55