Merge pull request #93 from chaturadilan/master

Issue fixes
adding change: dynamically load throttling tiers from tier xml
alter get throttling tier details from tier.xml changes
Fix for app usage by page graph
Merge pull request #94 from lahiru823/master

dynamically load throttling tiers from tier xml
fetch and merger remote tracking branch
Fixed issue in useragent displaying app
Merge branch 'master' of github.com:wso2/app-manager
Merge pull request #95 from jenananthan/master

Fix for app usage by page graph
changes after code review
Merge pull request #96 from jenananthan/master

Changes after code review
Changes after code review v1
Merge pull request #97 from jenananthan/master

Changes after code review v1
Merge branch 'master' of github.com:wso2/app-manager