removed all handlers from FABRevealMenu and use the view's one instead

[MFlisar]

I made following adjustments:

• removed all usages of new Handler() in the FABRevealMenu => instead I'm posting every runnable to the view's internal one so that they are queued up correctly and this also avoid creating new handlers for each call
• added abiltiy to use a custom menu inflater => if this single line of change is a problem, please explain me why

The first thing also solves bugs that happen if you recreate the view at runtime, which currently sometimes messes up layouts (i.e. changing menu direction after view inflation)

[MFlisar]

Additionally added following:

• a resource integer horizontal_menu_max_lines that is set to 1 by default which defines the number of text lines for horizontal menus so that this value can at least be changed in apps globally by overwritting this single integer

[HarinTrivedi]

@MFlisar, Thanks for the contribution.