Extracting strings from the program code to be able to extend the scope of the translations.

Work made by Paku and comited by Arthur.

This is a squashed version of the following commits:
Attempt to recover lost ML changes
ML2: source correction
ML2: source correction 2
ML2: source correction 3
MLGUI2: MAVLink Error string, conected > connected
MLGUI2: little correction
MLGIU2: strings extraction ParamsFragment.java SettingsFragment.java
Merge branch 'master' into StringsExtraction

Conflicts:
	DroidPlanner/res/values/strings.xml
Merge pull request #479 from DroidPlanner/StringsExtraction

Strings: Extending the scope of the translations