[BB10] Created BlackBerry 10 packaging rules and fixed build errors.

Cherry-picks from:
0edec5a2aec568f1d6d370bc5f4826f379890207
bd4553fa91c90a175e2d2709c2823b2faf5d0818
ca9cb6dfa53108993c75186063a5aad525669c25
[BB10] UI fixes:

- added proxy style and stylesheet to fix some UI issues on BlackBerry;
- removed style selection option because most styles have UI issues and
  removed About Qt menu item because About Qt dialog is too big;
- load bigger (128x128) icons on BlackBerry 10;
- removed printing related items from menu as there's no printer;
- made dialogs to be shown maximized;
- made solution graph smaller;
- made font smaller;
- made output text color black;
- start editing table cells on single tap;
- don't show keyboard in about dialog.

Cherry-picks from
aa64ad40827cde0a444cd8198b0f3457aa191f8f
95b0ef73dcb4517ac2ae08867494204bbe8d7ea6
ccdffe3a5f84f12fba2e2f19ab249c31f1fcf35d
628500a5d687889823197e476953859d529af4f0
[BB10] Use native file pickers.

Also, use "/accounts/1000/shared" folder as default in open/save dialogs.

Cherry-picks from:
c039ebbe827ae1ba92ae89b2e9caef549a96547c
2512bd5a48d086ea03092bc4bdb368c58fc82854
[BB10] Updated author ID due to new signing keys.
Fixed compilation warning "missing initializer for member".