Merge pull request #116 from machakux/i18n

Minor updates on Swahili translation
REduce font size on national plots
Allow LGA selection in main view
Updated po file
Clear LGA when switching region
Sort unique waterpoint field values alphabetically
Annotated flash msgs
Tweaked new report form wordings
Merge pull request #90 from taarifa/lga-filter

Allow LGA selection in main view
Add bower.json
Add .bowerrc
Use grunt-bower-task to run bower install on build
Use bower for angular-gettext
Use bower for angular-gridster
Use bower for PruneCluster
Use bower for angularjs-geolocation
Use bower for angular-flash
Use CDN for dc.js
Update install/bootstrap scripts to install & run bower
Update README with bower installation instructions