Prevents pre-flipped instructions

A single location update exactly equal to the turn radius was advancing and flipping simultaneously.

* Do not advance when distance is equal to turn radius
* Do not flip when distance is equal to turn radius
Fixes testing collateral damage

Updates tests that depend on given instruction being seen and flipped.
Merge pull request #248 from mapzen/chuck/pre-flipped-instructions

Prevents pre-flipped instructions
fixes routing pages
adds tag base constant for adapter views
༼ ༎ຶ ෴  ༎ຶ ༽
various fixes
resolves broken tests after rebase
Updates logic to determine overall distance remaining
Merge pull request #251 from mapzen/chuck/overall-distance

Updates logic to determine overall distance remaining
Offline route fragment tests by injecting mock router.

Prevents background NPEs and intermittent failures.
on resume and on arrival fix
Merge pull request #252 from mapzen/chuck/offline-route-fragment-tests

Offline route fragment tests by injecting mock router.
Merge pull request #246 from mapzen/peter/routing_pager

Peter/routing pager
new white lets_go and darkening locate me circle
new lets go different from Google
Replaces old notification icon with new white icon
Merge pull request #253 from mapzen/ekta/design

new white lets_go and darkening locate me circle
resolves the breaking of distance view in nav mode
reset zoom level and points north on find me