Pull Request for Issue865: create a motor tool for BioXAS beamline to display/modify BioXAS BL motors

https://github.com/acquaman/acquaman/issues/865

New:
   - created a BioXAS tool suite, which contains the existing BioXAS Shutter tool and the new BioXAS Motor tool
   - create BioXAS motor tool to display the status of motors for master/side/imaging beamline of BioXAS
   - added `BioXASCLSMAXvNMotor` to display the `CW`, `CCW` limit information
   - added `BioXASCLSMAXvMotorControlEditor` which extends `AMExtendedControlEditor` to be able to display the CW/CCW information

Altered:
 - move the existing BioXAS Shutter tool to the new created BioXAS tool suite
 - modified `CLSMAXvMotor` to be able to handle PV with different units (the default unit is `:mm`)
 - initialized all the motors for BioXAS main/side/imaging beamlines

@dretrex @davidChevrier @beaured0 @helfrij
 
![bioxastoolsuite](https://cloud.githubusercontent.com/assets/8292610/4407646/e459dbc2-44cb-11e4-8035-81f6531034f4.png)
![bioxasmotortool](https://cloud.githubusercontent.com/assets/8292610/4408532/b58d7ce6-44d4-11e4-84d6-6e521e593b07.png)