Merge pull request #1 from BigBrotherBot/release-1.10

Last update
change deprecated "version" argument in ArgumentParser
minor style change
checks the passed argument/file exists
Merge pull request #90 from ozon/improvements/argparse

[CORE] Improvements to command line arguments parsing
Merge pull request #2 from BigBrotherBot/release-1.10

Last update
change getNextMap to use CVARs only (no more mapcycle file parsing)
Merge pull request #91 from FenixXx/release-1.10

[URT] change getNextMap (iourt41) to use CVARs only (no more mapcycle file parsing)
xlrstats v3.0.0b2 - purging history tables, compatibility, start BattleLog frame
[CORE] add getTables() method to storage module
[XLRSTATS] call B3 storage getTables() method to support both MySQL and Sqlite
[TESTS] update tests to follow up recent changes to XLRstats
added update to 1.10 sql to setup/update procedure
[CORE] add support for MySQL empty or no password
Merge branch 'release-1.10' of https://github.com/BigBrotherBot/big-brother-bot into release-1.10
[TESTS] allow to customize MySQL host, database and credential for tests using environment variables
[Travis] enable mysql on Travis
[DIST] add the fileinput module to the win32 release so the badrcon plugin can work with b3_run.exe
[admin plugin] make conf pm_global accept yes/no (fix issue #8)
Merge pull request #92 from FenixXx/release-1.10

[admin plugin] make conf pm_global accept yes/no (fix issue #8)
[punkbuster plugin] make sure pb is enabled in b3.xml: fix issue #93