[TIMOB-6412] Android: rgba() fixes and addition for floats

[m1ga]

JIRA: https://jira.appcelerator.org/browse/TIMOB-6412
JIRA: https://jira.appcelerator.org/browse/TIMOB-18821

Allows spaces between values and float values

working TSS values:

"#view1":{backgroundColor: "#f00"}
"#view2":{backgroundColor: "rgb(0,    255,    0)"}
"#view3":{backgroundColor: "rgba(0, 0 ,255, 128)"}
"#view4":{backgroundColor: "rgba(0,0 ,255 , 0.3 )"}
"#view5":{backgroundColor: "rgba(0,235,255,128)"}
"#view6":{backgroundColor: "rgba(0.4,0.4,0.4,0.4)"}

[sriks]

@m1ga Quick suggestion - from next time please mention ticket and title in commit message rather than cryptic. Ex:
[TIMOB-6412] Android: rgba() fixes and addition for floats

[sriks]

Code reviewed. FT Passed.