New Class
-created LanguagesSettings.java and LanguagesSettings.xml - for providing the choice to switch the language used in Calculabot
-created akselerasi.java

Home.java and Home.xml
-made the Home.java more "readable" by utilizing space key and tab key optimally.
-deleted a line of code which is considered not useful and was used for testing other lines of code.(the deleted code is available to be restored)
-added new button(langset.png) which leads to LanguageSettings page

HelpController.java
adds Bahasa Indonesia to the class

FormulaBase.java
adds FormulaBase(int i) because i cannot use directly shared preference in there

Signed-off-by: Adrianto Puji Irawan <adrianto.puji@gmail.com>