added java_debug to web-ui

java_debug is available as toggle (checkbox) from server.config
java_debug is set to False by default
added additional fields to sanitize sc

all crontabs are int() checked at creation
archive/backup intervals default to [skip]. fixed issue where unchanged
fields in the web-ui would resort to sc defaults at '0', meaning every
24 hours.
revised ping code

removed asserts and replaced with ifs
added new check for legacy compat (1.2)--fallback if first three bytes
unexpected
revised server_version

primary source of version now is <minecraft.version> and fallback is
<version>
Due to different methods of tagging versions among server suites,
<minecraft.version> is always 100% right, but omits minor version
details.  <version> gets minor version, but sometimes omits data
entirely, e.g., 'dev-snapshot'
added property server_milestone_long

ping() will now return server version triplet for legacy protocol
login page variable for masking

added a style for more consistent toggling of masking
masking can now be toggled by changing true -> false
corrected issue with mask password checkbox

corrected issue where checkbox did not correspond with iCheck value
stock_profiles.py updated for minecraft 1.7.5
Merge pull request #44 from kaimi/minecraft-1.7.5

stock_profiles.py updated for minecraft 1.7.5
Added russian localization files
	new file:   README_ru.md
	new file:   html/index_ru.html
	new file:   html/login_ru.html
added misc.mask_password to mineos.conf

allowable False/True--defaults to False if missing.