Jump to and highlight ayah (fixes #462)

Sorry, this does not really comply with _One Single Change Per Commit_ rule.

Changes made
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JumpFragment.java:
 - Reformatted whole class according to code style guide***
 - Changed positive button to neutral button (there is no negative button)
 - Used StringBuilder for building Surah titles
 - Removed redundant variable and for loop from suraSpinner's onItemSelected() method

layout/jump_dialog:
 - Reformatted the whole file according to code style guide
 - Changed "match_parent" (added API Level 8) to "fill_parent" (because min SDK is 7)
 - Set maxLength of page number EditText to 3 (max acceptable number is 604)

PagerActivity.java:
 - Added new method jumpToAndHighlight() (copy/pasted from QuranActivity.java)
 - OR'ed setSystemUiVisibility() flags for better readability

***The default right margin in Android Studio is 100.
I did not change this as there is nothing about right margin in the guideline.
Added little sanity to this block by separating "Go to ayah" from "Go to page".
But, probably, will need to add listener/callback to QuranActivity/PagerActivity to make it proper.