Various small fixes. Bumped two weeks early to incorporate fixes to build problems with v1.3:
https://f-droid.org/wiki/page/cz.martykan.forecastie/lastbuild_15
- Change graphs to float values, rather than integers
- Fix incorrect capitalisation in widget
- Expose hardcoded values so app can be themed more flexibly
- Add zoom control to maps
- Add version number to "About" dialogue
- Fix problems with translations
- Other small fixes such as correcting typos