Made changes for BUG #141

[anantguptadbl]

Signed-off-by: anantguptadbl anantguptadbl@gmail.com

The way the singularize function is structured, it was creating issues for few words that appear at the end of large words
Within the function there were specific calls for endswith
For the words listed in
singular_irregular
singular_uncountable
singular_uninflected

for x in singular_uninflected:
    if x.endswith(w):
            return word

the above is changed to

for x in singular_uninflected:
    if x==w:
        return word

The function endswith will not add value, so I replaced it with a simple equals comparison