Add gitignore file.
Add gitignore file for rails specific files.

tmp/*
log/*
*sqlite3
db/schema.rb

public/system/*
Remove committed temporary commit message files
Remove committed gedit temporary files
Remove committed server runtime generated files and DB files.
Remove committed .DS_Store files.

Macs and mac users.
Remove committed paperclip attachments.
Add migrations removed by commit 397d86dcf0c9d5815876d53ed9fb5f0e4364f699
Revert "Merge pull request #54 from DevYah/c3_MahmoudHashish_44_Delete_Idea"

This reverts commit 1a9c64d28a2405dc0ed5aa6fee35a882c4fca003, reversing
changes made to b08ead5ffacf19fedac0019aa17754033ad080d9.

This unmerges Mahmoud Hashish's pull request for Issue #44
Revert "Merge pull request #71 from DevYah/C2_omar_25_review_ideas"

This reverts commit 55876f56afd67e23acbf92bd2ac4b71990c3ce7a, reversing
changes made to bb9ccaa59bd91557c27a08e14b90e8e7164ef125.

This unmerges Omar Mahmoud's pull request for Issue #25
Revert "Merge pull request #66 from DevYah/C2_mohammad-abdulkhaliq_#41_create/edit_tag"

This reverts commit b08ead5ffacf19fedac0019aa17754033ad080d9, reversing
changes made to 55876f56afd67e23acbf92bd2ac4b71990c3ce7a.

This unmerges Mohammad Abdulkhaliq's pull request for Issue #41
Add solr runtime files to gitignore
Revert "Merge pull request #70 from DevYah/C4_salah_#45_searching-in-ideas"

This reverts commit 148e78d4c424d3564018d9f9e6929cd8bf7ed22b, reversing
changes made to 914871c42397225bbc7af4c3310a8111f64a4565.

This unmerges Mohamed Salah's pull request for Issue #45
Restore model inheritance.

This was broken due to a complicated interaction between several merge commits
and was restored by checking out the state of the files from Hisham Gezeery's
commit df734977d71426bd65fe5c26bb91aceef5594f4e
Revert "Merge pull request #69 from DevYah/C4_lina_#38_Topten"

This reverts commit 914871c42397225bbc7af4c3310a8111f64a4565, reversing
changes made to fe95239beeaa36ba92108f374bd625670e0b9c9d.

This unmerges Lina Basheer's pull request for Issue #38
Merge pull request #99 from DevYah/C1_mnzaki_#98_master_blaster

Give Master new life