Reset KeyPair for AndroidKeyStore if it is giving error in unwrapping
save state for webview to avoid error if config changes flag are not used in manifest
increase min build tool# to fix Travis build
Merge pull request #230 from AzureAD/fix_key

Reset KeyPair for AndroidKeyStore if it is giving error in unwrapping
Merge branch 'dev' into improve_rotation
remove comment from code
update comment for review feedback
Merge pull request #231 from AzureAD/improve_rotation

save webview state for config changes
add loading text as optional.
Merge pull request #232 from AzureAD/add_loading_text

add loading text as optional.
open link in external browser
Merge pull request #233 from AzureAD/ext_link

open special link in external browser
token expiration buffer
token expiration buffer
set default buffer time to 300secs
Merge pull request #237 from AzureAD/expiration_buffer

token expiration buffer
allow null user query to return from cache as well and update test for that
Merge branch 'dev' into fixcache
merge settings
Merge branch 'dev' into fixcache