Fixed issue with collapse map z-index

* Increased z-index on collapse map button to 1000 to overcome attributions
* closes #193
Use MySQLi db in readme install instructions
Hide parts of the map attribution notice on smaller screensizes.

Show a smaller attribution for smaller screens.
Remove the ‘Leaflet’ link from attribution.
Merge pull request #194 from ushahidi/map-collapse-dev

Fixed issue with collapse map z-index
Make location editor maps larger

Maps need to be be large enough to provide users context when editing a
location
Merge branch 'master' into post-modal-form

Conflicts:
	modules/UshahidiUI/media/css/style.css
	modules/UshahidiUI/media/css/test/style.css