createNightlies.py incorrectly determines repository name if repository path ends with a slash

[trev]

How to reproduce

1. Configure the Android repository with a trailing slash:

   abpandroid_repository=/foo/bar/adblockplusandroid/
   abpandroid_type=android
   abpandroid_name=Adblock Plus for Android
   abpandroid_downloadPage=/en/android
   

2. Run python -m sitescripts.extensions.bin.createNightlies. Alternatively, run the following Python code:

   import sitescripts.extensions.utils as utils
   for config in utils.Configuration.getRepositoryConfigurations():
     print [config.repository, config.basename]
   

Observed behaviour

Android builds are placed into the development builds root directory. The Python code prints (among other things):

['/foo/bar/adblockplusandroid', '']

This only affects repositories where the repository name cannot be determined from metadata and has to be guessed from repository path.

Expected behaviour

Android builds should be placed in the adblockplusandroid subdirectory. The Python code should print:

['/foo/bar/adblockplusandroid', 'adblockplusandroid']

[trev]

Fixed: ​https://hg.adblockplus.org/sitescripts/rev/c9ad526408c4