Fix one source of config disconnect problem

The MainActivity is using a fragment stack on a container for About and
Config but a different stack on a different container for
NearbyDevices. The result is a missing onPause call when entering
BeaconConfigFragment. This kept the BLE scan running at LOW_LATENCY.
Scanning and GATT connections cannot occur at the same time so this was
causing a problem.
MainActivity Code Inspection and cleanup

Remove warnings from Code Inspection.
Collapse calls A->B->C to A->B.
Use onPause/onResume to resume and pause the Scan Service.
About Fragment Code Inspection and cleanup

Fix text cut off when system font set to large
Fix press highlight of Learn More
Remove Inspection warnings
Update with XML format
Update gitignore

We don’t check in .idea files
Merge pull request #70 from schilit/Config-Bug

Fix one source of config disconnect problem.
Good find, thanks! Merging!
Merge pull request #74 from schilit/gitignore

Update gitignore.
Merged.
Merge branch 'master' of https://github.com/google/physical-web into MainActivity-Cleanup

Conflicts:

android/PhysicalWeb/app/src/main/java/physical_web/org/physicalweb/MainA
ctivity.java
Merge pull request #71 from schilit/MainActivity-Cleanup

MainActivity Code Inspection and cleanup.
Looks good to me. Thanks!
Merging.
Merge pull request #73 from schilit/About-Inspection

About Fragment Code Inspection and cleanup.
Looks good to me. Thank you!
Merging.
Updated iml file to match the preferred sdk.
Rename DeviceDiscoveryService

Rename to UriBeaconDiscoveryService
Merge pull request #75 from matthewsibigtroth/updating_iml_file

Updated iml file to match the preferred sdk.
Merge pull request #76 from schilit/Rename-BeaconDiscoveryService

Rename DeviceDiscoveryService.
LGTM.
Merging.
Fix ActionBar name

Set the action bar name in onResume.
Merge pull request #77 from schilit/master

Fix ActionBar name.
LGTM.
Merging.
Replace "..." with ellipsis character.
Added description to the physical web logo
Changed layout_width. No need to calculate the width if you're using weight. Also swapped weights to represent the correct weight.
Merge pull request #79 from g-ortuno/small-improvements

Small improvements